MCQ
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?
- A$16 : 1$
- B$2 : 1$
- C$1 : 4$
- ✓$4 : 1$
$\quad \quad \mathrm{H}_{2}: \mathrm{O}_{2}$
mass $2: 32$
i.e. $1: 16$
therefore, Molar ratio $=\frac{n_{\mathrm{H}_{12}}}{n_{0_{2}}}=\frac{x / 2}{4 x / 32}=\frac{(x) \times 32}{2 \times 4 x}=\frac{4}{1}=4: 1$
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