A mixture of dihydrogen and dioxygen at ...

A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

0.8 bar

0.4 bar

1.6 bar

3.2 bar

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The correct Answer is:

Let the weight of volume = 100 g
`P_(H_(2)) = P_("total") . X_(H_(2))`
`P_("total") xx (n_(H_(2)))/(n_(H_(2)) + n_(O_(2))) = 1 xx (20 //2)/((20)/(2) + (80)/(32)) ` bar
`=0.8` bar

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