Question

What is the H2 / H2O molar ratio? 2 H2 + O2 ---> 2 H2O

Answer 1

In order to determine the mole ratio, we need to begin with a balanced chemical equation.

For this reaction the balanced chemical equation is
`2H_2 + O_2 -> 2H_2O`

The mole ratios are determined using the coefficients of the substances in the balanced chemical equation.

`2 mol H_2 : 1 mol O_2 : 2 mol H_2O`

The mole ratios for each substance pair would be

`2 mol H_2 : 1 mol O_2`

`(2 mol H_2)/ (1 mol O_2)` or `(1 mol O_2)/ (2 mol H_2)`

`2 mol H_2 : 2 mol H_2O`

`(2 mol H_2)/ (2 mol H_2O)` or `(2 mol H_2O)/ (2 mol H_2)`

I hope this was helpful.
SMARTERTEACHER