(a) Interpretation: If the given process is found as continuous, batch or semibatch and if it is in transient or steady state. Concept introduction: Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups: Batch processes: In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings. Continuous processes: In this process, the input and output flows throughout in the duration of the process. Semibatch processes: These processes are of those types which are neither batch process nor continuous. Steady state: Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state. Transient: Any process, whose variable change with time is known as transient or unsteady-state process.

Question

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Answer 1

Question

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

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03:30

Students have asked these similar questions

In a chemical production plant, cyclohexane is made by the reaction of benzene and hydrogen. Reaction is as follows: CHs + H2 → CoH12 The complete process of producing cyclohexane uses a reactor and a separator. Using the process shown below and assuming 20 % excess hydrogen in the fresh feed, find the ratio of the recycle stream to the fresh feed stream, the composition of the final product stream, and the composition of the stream leaving the reactor. The overall conversion of benzene is 92% and the single-pass conversion is 21.5 %. The recycle stream is composed of 23.9 % benzene and the remaining hydrogen. Fresh Feed REACTOR SEPARATOR Product Recycle

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Methanol (CH3OH) is produced in the reaction of carbon dioxide and hydrogen via the reaction and process given below: CO2+3H2→CH3OH+H2O The fresh feed to the process contains hydrogen, carbon dioxide, and 0.400 mol% inerts (I). The reactor effluent passes through a condenser that removes essentially all of the methanol and water formed and none of the reactants or inerts. The unreacted reactants and inerts are recycled to the reactor. To avoid buildup of the inerts in the system, a purge stream is withdrawn from the recycle. 100 mol/h of feed to the reactor (not the fresh feed to the process) contains 29.5 mol% CO2, 68.0 mol% H2, and 2.50 mol% inerts. The single-pass conversion of hydrogen is 46.71%. What is the recycle-to-fresh feed ratio?

Answer 2

Question

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

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03:30

Answer 3

Question

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

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03:30

Answer 4

Question

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

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03:30

Answer 5

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

Answer 6

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Answer 7

Chapter 4, Problem 4.1P

Interpretation Introduction

(a)

Interpretation:

If the given process is found as continuous, batch or semibatch and if it is in transient or steady state.

Concept introduction:

Any chemical process can be identified on the basis of its classification. The chemical processes are classified into following groups:

Batch processes:

In this process the feed is filled to the vessel in the beginning but later the contents are removed. During this process, no mass exchange is done between the system and surroundings.

Continuous processes:

In this process, the input and output flows throughout in the duration of the process.

Semibatch processes:

These processes are of those types which are neither batch process nor continuous.

Steady state:

Any process in which the values of variables like temperature, pressure, volume, flow rates etc. do not change with time except some minor fluctuations in content mean values, then the process is steady state.

Transient:

Any process, whose variable change with time is known as transient or unsteady-state process.

Answer 8

Expert Solution

Answer to Problem 4.1P

The process is continuous and transient.

Answer 9

Expert Solution

Answer 10

Expert Solution

Answer 11

Expert Solution

Answer 12

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

In the given process, the water flows inside at a rate of 6kg/s and it withdraws at rate of 3kg/s which means that the process is continuous in which the input and output flows at continuous rate till the process ends.

Further, initially, the container was half filled but the for 1 second, 6kg water enters the system and 3 kg goes out which means that the volume of the container will keep changing and hence the process can not be steady-state.

Thus the process is transient in nature under which the variable changes with time.

Answer 13

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Answer 14

Interpretation Introduction

(b)

Interpretation:

The mass balance for the given process has to be determined. The terms of the general balance should be identified in the obtained equation and reason should be given for omitting any term.

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Answer 15

Expert Solution

Answer to Problem 4.1P

The mass balance for the given process is Input−output=Accumulation.

Where, input is the water coming inside the system and output is the water flowing out the system.

The terms generation and consumption are omitted because the process is continuous and there is no reaction.

Answer 16

Expert Solution

Answer 17

Expert Solution

Answer 18

Expert Solution

Answer 19

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

As per the given problem:

The process is continuous for which there is no reaction and so, the generation is considered as zero. Here, the flow is continuous from the system so the output will also be considered to be the zero.

In this system, there is only the input and output of water without any reaction.

Since, no reaction so:

Generation=0,Accumulation=0

Putting the values, the equation becomes:

Input+generation−output−consumption=AccumulationInput+0−output−0=AccumulationInput−output=Accumulation

Hence, the mass balance is:

Input−output=Accumulation6kg/s−3kg/s=Accumulation3kg/s=Accumulation

Hence, the balance is:

Accumulation=3kg/s

Answer 20

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

Answer 21

Interpretation Introduction

(c)

Interpretation:

How long will tank take to overflow?

Concept introduction:

In any system, for any conserved quantity like total mass, mass of particular species, momentum, energy etc. the balance can be expressed as follows:

Input+generation−output−consumption=Accumulation

Where, input is feed that enters through system boundary, generation is the content produced within system, output is the content which leaves the system and consumption is the feed consumed within the system while accumulation is the actual product build up in the system.

Answer 22

Expert Solution

Answer to Problem 4.1P

The tank will start to overflow after 333sec.

Answer 23

Expert Solution

Answer 24

Expert Solution

Answer 25

Expert Solution

Answer 26

Explanation of Solution

Given:

The volume of tank is 2.0m3 and the tank is initially half filled.

Water enters at a rate of 6kg/s and withdraws at a rate of 3kg/s.

Calculation:

The tank is half filled, so the content of tank is 1.0m3:

From the mass balance we have, Accumulation=3kg/s

Hence, the tank fills 3 kg in one second.

Now, the time taken to fill the tank with the volume is 1.0m³.

Density of water is 1000kg/m3.

Hence, the time required to fill the tank is:

t=1m3×1000kg1m3×1s3.0kg=333.3s

Answer 27

Ch. 4 - Prob. 4.1P Ch. 4 - Rain is falling on a poorly designed 150-m" flat...Ch. 4 - A liquid-phase chemical reaction A -* B takes...Ch. 4 - A stream consisting of 44.6 mole% benzene and...Ch. 4 - Prob. 4.5P Ch. 4 - A liquid mixture of acetone and water contains 35...Ch. 4 - Prob. 4.7P Ch. 4 - Prob. 4.8P Ch. 4 - Inside a distillation column (see Problem 4.8), a...Ch. 4 - Prob. 4.10P

Answer to Problem 4.1P

Explanation of Solution

Answer to Problem 4.1P

Explanation of Solution

Answer to Problem 4.1P

Explanation of Solution

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