Chapter 14, Problem 14.129MP

Interpretation Introduction

Interpretation:

The time in second that required for the pressure of ${\text{NO}}_2$ to reach 1.3 mm Hg needs to be determined.

Concept introduction:

Half-life period is time needed for concentration of a reactant to fall to one half its initial values. The equation for half-life period is as follows:

${\text{t}}_{\raisebox{1ex}{$\text{1}$}\!\left/ \!\raisebox{-1ex}{$\text{2}$}\right.}\text{=}\frac{\text{0}\text{.693}}{\text{k}}$

Here, ${\text{t}}_{\raisebox{1ex}{$\text{1}$}\!\left/ \!\raisebox{-1ex}{$\text{2}$}\right.}$ is half-life, and k is rate constant.