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In a gas mixture of H(2) and He, the par...

In a gas mixture of `H_(2) and He`, the partial pressure of `H_(2)` is half that of He. Find the mole fractions of `H_(2)` and He in the mixture.

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Verified by Experts

As given, `p_(H_(2))=p_(He)//2 or, p_(He)=2xxp_(H_(2))`
or, `x_(He)xxP=2xx x_(H_(2))xxP or, x_(He)=2xx x_(H_(2))`
Hence, `2xx x_(H_(2)) +x_(H_(2))=1 or, x_(H_(2))=(1)/(3)~~0.34`
`therefore x_(He)=2xx x_(H_(2))=0.68`
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