Chapter 24, Problem 71QP

Interpretation Introduction

Interpretation:

The reason why hydrogen peroxide sold in drugstores comes in dark bottles is to be explained. Also, oxygen gas is to be produced in liters at STP from $15.0\text{ g}$

of $7.5\%$ hydrogen peroxide solution, which is used for the decomposition of hydrogen peroxide.

Concept introduction:

The decomposition of hydrogen peroxide can take place rapidly by taking a number of catalysts that increase the rate of reaction.

The decomposition of hydrogen peroxide happens due to its unstable nature.

The amount of oxygen gas at STP is calculated as:

$massof{H}_2{O}_2\times \frac{\%H_2{O}_2}{100\%so\ln }\times molarmass\times \frac{1mol{O}_2}{2mol{H}_2{O}_2}\times \frac{22.41L{O}_2}{1mol{O}_2}$