Question

A mixture of gass contain H2 and O2 gases in a ratio of 1 : 4 (w/w) what is the molar ratio of the two gases

Answer 1

Answer:

4:1 is the molar ratio of the two gases.

Explanation:

A mixture of gas contain $H_2$ and $O_2$ gases in a ratio of 1 : 4.

Let the weight of hydrogen gas be 1x

Let the weight of oxygen gas be 4x

Moles of hydrogen gas = $n_1=\frac{1x}{2 g/mol}$

Moles of oxygen gas = $n_2=\frac{4x}{32 g/mol}$

The molar ratio of the two gases:

$\frac{n_1}{n_2}=\frac{\frac{1x}{2 g/mol}}{\frac{4x}{32 g/mol}}$

$\frac{n_1}{n_2}=\frac{4}{1}$

4:1 is the molar ratio of the two gases.