Vapor Pressure and Boiling Point (12.2.3)

Question 1

• A liquid is in equilibrium with its vapor when the rate of molecules leaving a liquid equals the rate of molecules returning to the liquid in a closed system.

Answer 1

• A liquid is in equilibrium with its vapor when the rate of molecules leaving a liquid equals the rate of molecules returning to the liquid in a closed system.

Question 2

• The vapor pressure curve is a plot that relates vapor pressure and temperature.

Answer 2

• The vapor pressure curve is a plot that relates vapor pressure and temperature.

Question 3

• Although evaporation is a phase change, boiling is an equilibrium process that occurs when the vapor pressure has exceeded the atmospheric pressure.

Answer 3

• Although evaporation is a phase change, boiling is an equilibrium process that occurs when the vapor pressure has exceeded the atmospheric pressure.