This lesson includes 18 additional questions and 15 additional question variations for subscribers.
Lesson Worksheet: Vapor Pressure Chemistry
In this worksheet, we will practice explaining vapor pressure, its relation to boiling point, and the factors that affect vapor pressure.
In a closed system, a constant vapor pressure results from the formation of a dynamic equilibrium between the vapor and the liquid. At this equilibrium, which two opposing processes are occurring at the same rate?
- AThe diffusion of the liquid and the effusion of the vapor
- BThe evaporation of the liquid and the diffusion of the vapor
- CThe evaporation of the liquid and the condensation of the vapor
- DThe self-ionization of water and the condensation of the vapor
- EThe breaking of chemical bonds and the formation of chemical bonds
A chemist is given three different liquids and wants to determine which one is the most volatile. The chemist places an equal volume of each liquid into a manometer and ensures the temperature of all three liquids is the same. According to the image below, which liquid is the most volatile?
- BEthylene glycol
- CDiethyl ether
The given graph shows the vapor pressure for several liquids against temperature.
Which liquid is the most volatile?
- EEthanoic acid
Which liquid has the highest boiling point?
- CEthanoic acid
At what atmospheric pressure will acetone boil at ?
- A100 kPa
- B38 kPa
- C80 kPa
- D20 kPa
- E50 kPa
Which of the following statements is not correct?
- AThe freezing point of the solution is higher than that of the pure solvent.
- BThe boiling point of the pure solvent is lower than that of the solution.
- CThe freezing point of the solution is lower than that of the pure solvent.
- DThe vapour pressure of the pure solvent is higher than that of the solution.
3 spoons of sugar were added to a cup of water to form a solution. Which one of the following is considered a false statement?
- AThe vapour pressure of the solution is higher than that of pure water.
- BThe vapour pressure of the solution is lower than that of pure water.
- CThe boiling point of the solution is higher than that of pure water.
- DWhen the amount of sugar is increased, the boiling point of the solution increases.