Chapter 17, Problem 17B.3AE

Interpretation Introduction

Interpretation:

The rate constant for the first-order decomposition of ${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}$ in the reaction ${\text{2N}}_{\text{2}}{\text{O}}_{\text{5}}\text{(g) }\stackrel{}{\to }{\text{ 4NO}}_{\text{2}}{\text{(g) + O}}_{\text{2}}\text{(g)}$ is $\text{k = 3}{\text{.38×10}}^{\text{-5}}{\text{s}}^{\text{-1}}$.  The half-life of ${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}$ has to be found.  If the initial partial pressure of ${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}$ is $\text{500 Torr}$, the partial pressure at $\text{50 s and 20 min}$ after initiation of the reaction has to be found.