Can someone please check-over my answers to these Chemistry questions?

Question

1. Vapor pressure of any liquid _______.

A. increases with increases in temperature

B. increases with decreases in temperature

C. is not affected by changes in temperature

D. increases with increases in volume of the liquid

E. None of the Above

 

2. The temperature at which the vapor pressure of a liquid is equal to normal atmospheric pressure is the _______.

A. boiling point

B. melting point

C. freezing point

D. ideal point

E. None of the Above

Answer 1

Hi Jesset,

you are correct on both the above questions.

The vapor pressure in a closed container is the pressure that escaping gas molecules from the liquid phase due to their ability to have sufficient kinetic energy to break their intermolecular bonds exerts downward against the liquid phase. Increasing the temperature increases the kinetic energy permitting more molecules to go in the gas phase and exert a greater vapor pressure against the liquid phase.

The second question you answered correctly as well. The boiling point of a liquid occurs when it’s vapor pressure equals the existing barometric atmospheric pressure.