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A and B are ideal gases. The molecular w...

A and B are ideal gases. The molecular weights of A and B are in the ratio of `1 : 4`. The pressure of a gas mixture containing equal weights of A and B is P atm. What is the partial pressure (in atm.) of B in the mixture

A

`P/5`

B

`P/2`

C

`(P)/(2.5)`

D

`(3P)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`X_B = (m//4a)/(4//ma + m//a) = 1/5`
`rArr P_B = x_B P_("total") = P/5`
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