If P(A) is the vapour pressure of a pure...

If `P_(A)` is the vapour pressure of a pure liquid A and the mole fraction of A in the mixture of two liquids A and B is x, the parial vapour pressure of A is:

`(1 -x)P_(A)`

`xP_(A)`

`(x)/((1 - x)) P_(A)`

`(1 - x)/(x) P_(A)`

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