Practice Test

Question 9 • Chemistry

Which of the following best explains freezing point depression ?

Answer

the temperature at which the vapor pressure of a liquid equals the atmospheric pressure

the decrease in the freezing point of a solution as a function of the number of particles that are dissolved in the solution

the increase in the boiling point of a solution as a function of the number of particles that are dissolved in the solution

the increase in the freezing point of a solution as a function of the number of particles that are dissolved in the solution

Explanation

Freezing point depression is the lowering of a solution’s freezing point compared with that of the pure solvent. The size of the decrease depends on how many dissolved particles are present: more particles cause a greater decrease. Therefore, choice A is correct; choice B describes an increase, not a depression.

AI-written and checked against the verified answer.

More from this Course

Practice Test

Practice Test

Practice Test