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NEET levelSingle correct optionDifficulty 1 of 3so022

Two liquids A and B form an ideal solution with $x_{A} = x_{B} = 0.5$ . The vapour pressures of pure A and B at $300 K$ are $75 torr$ and $22 torr$ . The total vapour pressure of the solution is

A $48.5 torr$
B $97 torr$
C $53 torr$
D $24.25 torr$

Answer: A

P = x_{A} p_{A}^{0} + x_{B} p_{B}^{0} = 0.5 \times 75 + 0.5 \times 22 = 48.5 torr

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