A mixture of hydrogen and oxygen at one bar pressure contains by weight of hydrogen. The partial pre — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

In $100\text{ g}$ mixture, $H_2 = 20\text{ g}$ ($10\text{ mol}$), $O_2 = 80\text{ g}$ ($2.5\text{ mol}$). Total moles = $12.5$. $P_{H2} = X_{H2} \times P_{total} = (10/12.5) \times 1\text{ bar} = 0.8\text{ bar}$.