
(a)
Interpretation:
The triple point of iodine is 114.3°C at pressure 90mmHg. The critical point of iodine is 535°C. The solid has a density of 4.93g/cm3 and liquid has adensity of 4.00g/cm3. The phase diagram of argon gas is to be drawn. The phase diagram of iodine is used to determine the condition of iodine vapor at pressure 80mmHg and when this vapor cooled enough.
Concept introduction:
Phase diagram can be defined as the representation of pressure and temperature quantities of any pure substance. At these values of temperature and pressure, the different phases of the pure substance are equilibrium to each other.
The triple point is defined as the equilibrium condition among all the three phases of any pure substance which is solid, liquid and gas.
(b)
Interpretation:
The phase diagram of iodine is used to determine the condition of iodine vapor when it is condensed at temperature 125°C and at applied pressure.
Introduction:
Phase diagram can be defined as the representation of pressure and temperature quantities of any pure substance. At these values of temperature and pressure, the different phases of the pure substance are equilibrium to each other.
The triple point is defined as the equilibrium condition among all the three phases of any pure substance which is solid, liquid and gas.
(c)
Interpretation:
The phase diagram of iodine is used to determine the condition of iodine vapor when it is condensed at pressure 700 mmHg by cooling above triple point temperature.
Introduction:
Phase diagram can be defined as the representation of pressure and temperature quantities of any pure substance. At these values of temperature and pressure, the different phases of the pure substance are equilibrium to each other.
The triple point is defined as the equilibrium condition among all the three phases of any pure substance which is solid, liquid and gas.

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Chapter 9 Solutions
Chemistry: Principles and Reactions
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