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

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Answer 1 · 2014-05-06T01:08:19

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

For this reaction the balanced chemical equation is
$2 H_{2} + O_{2} \to 2 H_{2} O$ $2H_2 + O_2 -> 2H_2O$

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

$2 m o l H_{2} : 1 m o l O_{2} : 2 m o l H_{2} O$ $2 mol H_2 : 1 mol O_2 : 2 mol H_2O$

The mole ratios for each substance pair would be

$2 m o l H_{2} : 1 m o l O_{2}$ $2 mol H_2 : 1 mol O_2$

$\frac{2 m o l H_{2}}{1 m o l O_{2}}$ $(2 mol H_2)/ (1 mol O_2)$ or $\frac{1 m o l O_{2}}{2 m o l H_{2}}$ $(1 mol O_2)/ (2 mol H_2)$

$2 m o l H_{2} : 2 m o l H_{2} O$ $2 mol H_2 : 2 mol H_2O$

$\frac{2 m o l H_{2}}{2 m o l H_{2} O}$ $(2 mol H_2)/ (2 mol H_2O)$ or $\frac{2 m o l H_{2} O}{2 m o l H_{2}}$ $(2 mol H_2O)/ (2 mol H_2)$

I hope this was helpful.
SMARTERTEACHER