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If P^(@) the vapour pressure of a pure s...

If `P^(@)` the vapour pressure of a pure solvent and P is the vapour pressure of the solution prepared by dissolving a non volatile solute in it. The mole fraction of the solvent `X_(A)` is given by:

A

`(P^(@) -P)/(P^(@)) = X_(A)`

B

`(P^(@)-P)/(P) =X_(A)`

C

`(P)/(P^(@)) = X_(A)`

D

`P^(@) - P = X_(A)`

Text Solution

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The correct Answer is:
B
`P = X_(A) P^(@)`:
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