Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-numerical-Medium-Class 12
Given that the vapour pressures of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively, what is the total vapour pressure of an ideal solution when the mole fraction of acetone is 0.5?
A
687.3 mm Hg
B
700.8 mm Hg
C
737.3 mm Hg
D
689.5 mm Hg
Correct Answer
Option A
Detailed Explanation
Using Raoult's law, the total vapour pressure is calculated as p_total = (0.5)(741.8 mm Hg) + (0.5)(632.8 mm Hg) = 687.3 mm Hg.
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