Chloroform has a normal boiling point of 61.7°C. Which of the following is true?
A) At any temperature, the vapor pressure of chloroform is less than that of water.
B) Chloroform is more volatile than water.
C) At any temperature, the vapor pressure of chloroform is less than that of water, and chloroform is more volatile than water.
D) None of these is true.

Question

Quizplus · Accepted Answer

Chloroform has a lower boiling point than water (which is 100°C). This means that at any given temperature, chloroform will have a higher vapor pressure than water. Therefore, statement A is not true. 
Since chloroform has a lower boiling point and higher vapor pressure than water, it is more volatile than water. Therefore, statement B is true. 
Therefore, the correct choice is B.

Chloroform Has a Normal Boiling Point of 61