Chapter 13, Problem 13.133CP

Interpretation Introduction

Interpretation:

NO₂is the product of the first-order decomposition of N₂O₄whose half-life is 1.3×10-5 s. $N_2{O}_4{}_{(g)}\to 2N{O}_2{}_{(g)}$

From this we should find the time required for the pressure of NO₂ to reach 1.3 mm Hg if it is introduced into an evacuated flask at a pressure of 17.0 mm Hg.

Concept introduction:

The time taken for the reaction to complete for a first-order reaction is independent of the initial concentration. This is proved by a substituted method and graphical method.

To determine:

The time required for the pressure of NO₂ to reach 1.3 mm Hg if it is introduce into an evacuated flask at a pressure of 17.0 mm Hg.