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Equal weights of ethane and hydrogen are...

Equal weights of ethane and hydrogen are mixed in an empty container at `25^(@)C`. The fraction of the total pressure exerted by hydrogen is

A

`1 : 2`

B

`1 : 1`

C

`1 : 16`

D

`15 : 16`

Text Solution

Verified by Experts

The correct Answer is:
D
Let the mass of `H_(2)=`x gm , `P_(H_(2))=` = (mole fraction of `H_(2)`) `xx` total pressure `=((x//2)/((x)/(2) + (x)/(30))) xx P_("total") = (15)/(16) xx P_("total")`
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