The vapour pressures of pure liquids and
are
and
mmHg, respectively at
On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture. The mole fraction of liquids
is
in the mixture. The vapour pressure of the final solution, the mole fractions of components
and
in vapour phase, respectively are :
mole fraction of A in vapour phase
Option 4)
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