Equal weights of ethane and hydrogen are mixed in an empty container at 25oC. The fraction of total pressure exerted by hydrogen is x:y. Find the value of x:y.
A
3:16
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B
15:4
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C
3:4
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D
15:16
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Solution
The correct option is D15:16 Let, xg of each gas is mixed. Moles of ethane=x30Moles of Hydrogen=x2Mole fraction of hydrogen=x2x2+x30=1516 ⇒Partial pressure ofH2Total pressure=mole fraction of hydrogen ⇒x:y=15:16