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Two pure liquids A & B which can from id...

Two pure liquids A & B which can from ideal solution have vapour pressures 300 torr & 800 torr . A mixture of the vapour of A & B for which the mole fraction of A is `0.25` is slowly compressed at temperature T.
The total pressure applied when only last bubble of vapour remains

A

675 torr

B

775 torr

C

875 torr

D

575 torr

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A
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