Chapter 13, Problem 13.68SP

Interpretation Introduction

Interpretation:

The concentration of ozone in parts per million needs to be determined, if the average total pressure of ozone layer in Earth’s atmosphere is 10 mmHg (1.3 x10-2 atm) and the partial pressure of ozone has in the layer is 1.2 x 10-6 mmHg (1.6 x 10-9 atm).

Concept introduction:

According to Dalton’s law of partial pressure, for a gaseous mixture the total pressure is equal to the sum of partial pressures of all the components present in the mixture. Thus, the total pressure is larger than the partial pressure of both gaseous components.

$\text{Partial pressure = Mole fraction }\times {\text{ P}}_{\left(\text{total}\right)}$

Mole fraction is the ratio of moles of substance and total moles in the solution or mixture.