Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 13, Problem 38E

Write expressions for Kp for the following reactions.

a. 2 Fe ( S ) + 3 2 O 2 ( g ) Fe 2 O 3 ( S )

b. CO 2 ( g ) + M g O ( s ) MgCO 3 ( s )

c. C ( s ) + H 2 O ( g ) CO ( g ) + H 2 ( g )

d. 4 KO 2 ( s ) + 2 H 2 O ( g ) 4 KOH ( s ) + 3 O 2 ( g )

(a)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

Answer to Problem 38E

The expression for K and Kp is as follows.

Explanation of Solution

Given

The stated reaction is,

2Fe(s)+32O2(g)Fe2O3(s)

At equilibrium, the equilibrium constant expression (K) is stated as,

K=ConcentrationofproductsConcentrationofreactants

Where,

  • K is the equilibrium constant.

The solid components do not affect the value of the equilibrium constant.

For the given reaction, the equilibrium constant expression (K) is,

K=1[O2]32

The expression for Kp the given reaction.

The expression for Kp is as follows.

Given

The stated reaction is,

2Fe(s)+32O2(g)Fe2O3(s)

At equilibrium, the equilibrium ratio is expressed by the formula,

Kp=PartialpressureofproductsPartialpressureofreactants

Where,

  • Kp is the equilibrium constant in terms of partial pressure.

The solid components do not affect the value of the equilibrium constant.

The equilibrium ratio for the given reaction is,

Kp=1(PO2)32

Conclusion

When the equilibrium constant is expressed in terms of concentration, it is represented K When the equilibrium constant is expressed in terms of pressure, it is represented Kp . The solid components do not affect the value of the equilibrium constant.

(b)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

Answer to Problem 38E

The expression for K and Kp is as follows.

Explanation of Solution

Given

The stated reaction is,

CO2(g)+MgO(s)MgCO3(s)

At equilibrium, the equilibrium constant expression (K) is stated as,

K=ConcentrationofproductsConcentrationofreactants

Where,

  • K is the equilibrium constant.

The solid components do not affect the value of the equilibrium constant.

For the given reaction, the equilibrium constant expression (K) is,

K=1[CO2]

The expression for Kp the given reaction.

The expression for Kp is as follows.

Given

The stated reaction is,

CO2(g)+MgO(s)MgCO3(s)

At equilibrium, the equilibrium ratio is expressed by the formula,

Kp=PartialpressureofproductsPartialpressureofreactants

Where,

  • Kp is the equilibrium constant in terms of partial pressure.

The solid components do not affect the value of the equilibrium constant.

The equilibrium ratio for the given reaction is,

Kp=1(PCO2)

Conclusion

When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp . The solid components do not affect the value of the equilibrium constant.

(c)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

Answer to Problem 38E

The expression for K and Kp is as follows.

Explanation of Solution

Given

The stated reaction is,

C(s)+H2O(g)CO(g)+H2(g)

At equilibrium, the equilibrium constant expression (K) is stated as,

K=ConcentrationofproductsConcentrationofreactants

Where,

  • K is the equilibrium constant.

The solid components do not affect the value of the equilibrium constant.

For the given reaction, the equilibrium constant expression (K) is,

K=[CO2][H2][H2O]

The expression for Kp the given reaction.

The expression for Kp is as follows.

Given

The stated reaction is,

C(s)+H2O(g)CO(g)+H2(g)

At equilibrium, the equilibrium ratio is expressed by the formula,

Kp=PartialpressureofproductsPartialpressureofreactants

Where,

  • Kp is the equilibrium constant in terms of partial pressure.

The solid components do not affect the value of the equilibrium constant.

The equilibrium ratio for the given reaction is,

Kp=(PCO)(PH2)(PH2O)

Conclusion

When the equilibrium constant is expressed in terms of concentration, it is represented as K . When the equilibrium constant is expressed in terms of pressure, it is represented as Kp . The solid components do not affect the value of the equilibrium constant.

(d)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation: The expression for K and Kp for the given reactions is to be determined.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . When the equilibrium constant is expressed in terms of pressure, it is represented Kp .

To determine: The expression for K and Kp for the given reaction.

The expression for K the given reaction.

Answer to Problem 38E

The expression for K and Kp is as follows.

Explanation of Solution

Given

The stated reaction is,

4KO2(s)+2H2O(g)4KOH(s)+O2(g)

At equilibrium, the equilibrium constant expression (K) is stated as,

K=ConcentrationofproductsConcentrationofreactants

Where,

  • K is the equilibrium constant.

The solid and liquid components do not affect the value of the equilibrium constant.

For the given reaction, the equilibrium constant expression (K) is,

K=[O2][H2O]2

The expression for Kp the given reaction.

The expression for Kp is as follows.

Given

The stated reaction is,

4KO2(s)+2H2O(g)4KOH(s)+O2(g)

At equilibrium, the equilibrium ratio is expressed by the formula,

Kp=PartialpressureofproductsPartialpressureofreactants

Where,

  • Kp is the equilibrium constant in terms of partial pressure.

The solid components do not affect the value of the equilibrium constant.

The equilibrium ratio for the given reaction is,

Kp=(PO2)(PH2O)2

Conclusion

When the equilibrium constant is expressed in terms of concentration, it is represented K When the equilibrium constant is expressed in terms of pressure, it is represented Kp . The solid components do not affect the value of the equilibrium constant

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Chapter 13 Solutions

Chemistry

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