Chapter 14, Problem 14.142MP

Interpretation Introduction

Interpretation:

The work done in J after 4.02 h of decomposition of ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$ to water and ${\text{O}}_{\text{2}}$ needs to be determined.

Concept introduction:

On the basis of different orders, reactions can be classified as first order, second order and third order reaction. For a second order reaction the relation between the concentration and rate constant can be written as:

$\frac{\text{1}}{\text{C}}\text{ = }\frac{\text{1}}{{\text{C}}_{\text{0}}}\text{+kt}$

The work done by the system during expansion can be calculated with the help of below formula:

$\text{Work = }-\text{PΔV}$