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  • A mixture of hydrogen and oxygen contains  hydrogen by mass when the pressure is <img alt="\mathrm{ 2.2}" sr

A mixture of hydrogen and oxygen contains \mathrm{ 40 \%} hydrogen by mass when the pressure is \mathrm{ 2.2} bar. The partial pressure of hydrogen is ____________ bar. (Nearest Integer)

Option: 1

2


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Let the mass of mixture be 100 g

Mass of \mathrm{H_{2}} gas = 40 g

Mass of \mathrm{O_{2}} gas = 60 g

\mathrm{NH_{2}=\frac{40 \; g}{2\; g/mol}=20\; mole}

\mathrm{NO_{2}=\frac{60 \; g}{32\; g/mol}=1.875\; mole}

\mathrm{X_{H_{2}}=\frac{20}{20+1.875}=0.91}

\mathrm{P_{H_{2}}=X_{H_{2}}}\; \; \; \; \; \; \mathrm{P_{Total}=0.91 \times 2.2 \; bar}

                                             \cong 26 \; \text{ar}

Answer = 2

Posted by

jitender.kumar

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