Question

The disinfectant hydrogen peroxide (H2O2)

decomposes to form water and oxygen gas.
How much O2 will result from the decomposition of 2.22 mol of hydrogen peroxide?

Answer 1

1.1 mol of O2

Step-by-step explanation:

First we need the balance chemical equation which is

2 H2O2 -------> 2 H2O + O2

This is important because in stoichiometry you can go from units of one thing to other by using mole ratios, here the mole ratio is 2 mol of H2O2 for one mole of O2.

`2.2 mol H2O2 (1mol O2)/(2 mol H2O2)` = 1.1 mol of O2