Question

Vapor pressure can be described as: A) the temperature at which bubbles of vapor appear in a liquid. B) the pressure exerted on the Earth by the particles in the air. C) the temperature at which the vapor pressure of a liquid equals atmospheric pressure. D) the pressure exerted by a gas above the surface of its liquid. E) the pressure within the lungs during inhalation.

Answer 1

Answer: Option (D) is the correct answer.

Explanation:

Vapor pressure is defined as the pressure exerted by the vapors which are present on the surface of a liquid.

For example, vapor pressure of water at room temperature is 0.0313 atm.

On the other hand, the temperature at which the vapor pressure of a liquid equals atmospheric pressure is known as boiling point.

For example, boiling point of water at room temperature is $100^{o}C$.

Thus, we can conclude that vapor pressure can be described as the pressure exerted by a gas above the surface of its liquid.