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  4. A mixture of gases contains H2 and O2 gases in the ratio of 1: 4 (w/w). What is the molar ratio of the two gases in the mixture?

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Q. A mixture of gases contains $H_2$ and $O_2$ gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture?

AIPMTAIPMT 2015Some Basic Concepts of Chemistry

Solution:

$\frac{W_{H_2}}{W_{O_2}} = \frac{1}{4} \Rightarrow \frac{n_{H_2}}{n_{O_2}} = \frac{1/2}{4/32} = \frac{4}{1} $