Which of the following statements correctly defines the boiling point of a liquid? The temperature at which the
A
saturated vapour pressure equals the atmospheric pressure
B
molecules leaves the liquid at a rate equal to the rate at which they return
C
molecules leave the liquid at a rate higher than that at which they return
D
molecules leave the liquid at a rate lower than the rate at which they return
Verified Correct Answer: A.
Physical Principles & Numerical Solution
The boiling point of a liquid is the temperature at which the vapor pressure of a liquid is equal to the pressure of the atmosphere on the liquid, equal to 212^\circF (100^\circC) for water at sea level.
Source: Myschool Past Questions Archive (Record #45606)