Question

How to calculate partial pressure?

(a) Sum of the pressures of each individual gas

(b) Total pressure multiplied by the mole fraction of that gas

(c) Sum of the mole fraction of each individual gas

(d) Total concentration multiplied by the mole fraction of that gas

I got this question in my homework.

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

Answer 1

Correct answer is (b) Total pressure multiplied by the mole fraction of that gas

To elaborate: The total pressure of the mixture of gases is the sum of the individual pressures of each gas. The partial pressure of an individual gas is equivalent to the total pressure multiplied by mole fraction of that individual gas.