Chemistry
Chemistry
4th Edition
ISBN: 9780393919370
Author: Thomas R. Gilbert
Publisher: NORTON
Question
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Chapter 10, Problem 10.83QP

(a)

Interpretation Introduction

Interpretation: The phase of water that exists under the given conditions is to be predicted.

Concept introduction: Triple point is a point present in the pressure- temperature graph. It is defined as the point at which all the three phases of a substance coexist in equilibrium with each other at a time.

Critical point is a point present in the pressure- temperature graph where two phases that is liquid and gas coexist in equilibrium. At this point gaseous and liquid states are indistinguishable from each other.

In the phase diagram different phases of a substance are representated graphically at different temperatures and pressures.

To determine: The phase of water that exists at 2atm of pressure and 110°C .

(a)

Expert Solution
Check Mark

Answer to Problem 10.83QP

Solution

The liquid phase of water exists at 2atm of pressure and 110°C .

Explanation of Solution

Explanation

The phase diagram of water at 2atm of pressure and 110°C is given below.

Chemistry, Chapter 10, Problem 10.83QP , additional homework tip  1

Figure 1

In the above Figure, a point is obtained when perpendicular line is drawn from 110°C of temperature and 2atm of pressure on the axes of the pressure- temperature graph.

This point corresponds to the initial condition that is 2atm of pressure and 110°C of temperature and is denoted by A.

Point A is in the liquid phase in the above figure.

So, water is liquid at the 2atm of pressure and 110°C .

(b)

Interpretation Introduction

To determine: The phase of water that exists at 200atm of pressure and 380°C .

(b)

Expert Solution
Check Mark

Answer to Problem 10.83QP

Solution

Water is in the gas phase at 200atm of pressure and 380°C .

Explanation of Solution

Explanation

The phase diagram of water at 200atm of pressure and 380°C is given below.

Chemistry, Chapter 10, Problem 10.83QP , additional homework tip  2

Figure 2

In the above Figure, The critical point of water exist at 374°C of temperature and at 218atm of pressure.

The phase of water at 200atm of pressure and 380°C of temperature is shown by a point B in the above Figure. This point is in the gas phase.

So, water exists in the gas phase at 200atm of pressure and 380°C of temperature.

(c)

Interpretation Introduction

To determine: The phase of water that exists at 6.0×103atm of pressure and 0°C .

(c)

Expert Solution
Check Mark

Answer to Problem 10.83QP

Solution

Water is in solid phase at 6.0×103atm of pressure and 0°C .

Explanation of Solution

Explanation

The phase diagram of water at 6.0×103atm of pressure and 0°C is given below.

Chemistry, Chapter 10, Problem 10.83QP , additional homework tip  3

Figure 3

In the above Figure, the triple point of water is at temperature of 0.010°C and pressure of 0.0060atm . The points correspond to 6.0×103atm of pressure which is equal to 0.0060atm and 0°C of temperature is shown as point C in the above figure.

The temperature 0°C is just below the triple point.

So, in the above Figure, point C is in the solid phase.

Therefore, Water is in solid phase exists at 6.0×103atm of pressure and 0°C .

Conclusion

  1. a) The liquid phase of water exists at 2atm of pressure and 110°C .
  2. b) Water is in gas phase at 200atm of pressure and 380°C .
  3. c) Water is in solid phase at 6.0×103atm of pressure and 0°C .

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Chapter 10 Solutions

Chemistry

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