
Interpretation:
Each line in the phase diagram, in terms of the derivative it represents, is to be labeled.
Concept introduction:
Phase diagram represents the different physical states of a substance at different values of temperature and pressure. In the water, the molar volume of solid is greater than the molar volume of the liquid.

Answer to Problem 6.66E
The phase transition between solid phase to liquid phase is represented by the derivative,
The phase transition between solid phase to liquid phase is represented by the derivative,
The phase transition between solid phase to liquid phase is represented by the derivative,
The phase transition between solid phases is represented by the derivative,
Explanation of Solution
The phase diagram of water shown in Figure 6.6 is shown below.
Figure 1
In the given diagram, the total numbers of phase transitions represented are,
1. Gas phase to liquid phase
2. Gas phase to ice phase
3. Liquid phase to ice phase
4. Liquid phase to ice phase
5. Liquid phase to ice phase
6. Liquid phase to ice phase
7. Ice phase
8. Ice phase
9. Ice phase
10. Ice phase
11. Ice phase
12. Ice phase
Thus, the total number of phase transitions are
The phase transition between solid phase to liquid phase, that is, ice phase
Where,
•
•
The phase transition between gas phase to ice phase
Where,
•
•
The volume of gas is much greater than the volume of solid. Therefore, it can be neglected.
The phase transition between solid phase and liquid phase is represented by the derivative,
Where,
•
•
The volume of gas is much greater than the volume of liquid. Therefore, it can be neglected.
The phase transition between solid phases is represented by the derivative,
Where,
•
•
The phase transition between solid phase to liquid phase is represented by the derivative,
The phase transition between solid phase to liquid phase is represented by the derivative,
The phase transition between solid phase to liquid phase is represented by the derivative
The phase transition between solid phases is represented by the derivative,
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Chapter 6 Solutions
Physical Chemistry
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