Question

Federico has two samples of pure water—sample X and sample Y. Sample X has a volume of 1 L, and sample Y has a volume of 10 L. How do the boiling points of these two samples compare?
A. Sample Y will boil at a lower temperature because it has more volume.
B.Sample X and sample Y will boil at the same temperature.
C. Whichever sample receives heat first will have a lower boiling point.
D. Sample X will boil at a lower temperature because it has less volume.

Answer 1

Answer:

B.Sample X and sample Y will boil at the same temperature.

Explanation:

Boiling point of a liquid is the temperature at which the vapor pressure equals the atmospheric pressure.

Boiling implies a phase change of water from liquid to vapor. This requires input of energy in the form of heat. Since Y has a greater volume than X, Y will require a higher heat input. However, the boiling temperature will remain unchanged.

Answer 2

C is the answer. I just learned this