Question

For a binary ideal solution of two volatile liquids A and B (assuming B is more volatile), correct option which may be observed during mixing of these two liquids A and B (symbols hold their usual meaning)

• A. $P_{total}<P_A^0$
• B. Mole fraction of A in vapour state will increase with increase in $X_A$
• C. $P_B$ decreases with increase in $X_B$
• D. $P_A$ increases with increase in $X_B$

Answer 1

The correct option is B Mole fraction of A in vapour state will increase with increase in $X_A$

$Y_A\propto X_A$