
Concept explainers
(a)
Interpretation:
Which of the given aqueous solution has higher boiling point, higher freezing point and the lower vapor pressure have to be explained.
Concept introduction
Boiling point is the temperature at which liquid turns into a gas. Example: boiling point of water i
Where,
Boiling point elevation
Where,
m- molality of the solution
Freezing point is the temperature at which liquid turns into solid.
Freezing point depression
Where,
m- Molality of the solution
Vapor pressure is the pressure excreted by the molecules at the surface of the liquid in the closed container.
(a)

Answer to Problem 12.69QP
Explanation of Solution
Explanation of
(b)
Interpretation:
Which of the given aqueous solution has higher boiling point, higher freezing point and the lower vapor pressure have to be explained.
Concept introduction
Boiling point is the temperature at which liquid turns into a gas. Example: boiling point of water is
Where,
Boiling point elevation
Where,
m- molality of the solution
Freezing point is the temperature at which liquid turns into solid.
Freezing point depression
Where,
m- Molality of the solution
Vapor pressure is the pressure excreted by the molecules at the surface of the liquid in the closed container.
(b)

Answer to Problem 12.69QP
Explanation of Solution
Explanation of Urea has higher freezing point depression than
Freezing point depends on the molality and van’t Hoff factor of the solute. In this case,
(c)
Interpretation:
Which of the given aqueous solution has higher boiling point, higher freezing point and the lower vapor pressure have to be explained.
Concept introduction
Boiling point is the temperature at which liquid turns into a gas. Example: boiling point of water is
Where,
Boiling point elevation
Where,
m- molality of the solution
Freezing point is the temperature at which liquid turns into solid.
Freezing point depression
Where,
m- Molality of the solution
Vapor pressure is the pressure excreted by the molecules at the surface of the liquid in the closed container.
(c)

Answer to Problem 12.69QP
Explanation of Solution
Explanation of
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Chapter 12 Solutions
Chemistry
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