1.

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 molefraction of A in this first drop of condensate is :

Answer»

0.47
0.53
0.43
0.57

Answer :A


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