Question

What is partial pressure of water vapor?

(a) 23.8 mm Hg

(b) 230.8 mm Hg

(c) 2.38 mm Hg

(d) 0.238 mm Hg

The question was posed to me during a job interview.

This interesting question is from Distillation in portion Distillation of Food Processing Unit Operations

Answer 1

The correct answer is (a) 23.8 mm Hg

Explanation: The water vapor pressure is the partial pressure of water vapor in any gas mixture in equilibrium with solid or liquid water.