Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-numerical-Hard-Class 12
Given the vapour pressures of pure acetone (741.8 mm Hg) and pure chloroform (632.8 mm Hg) at 328 K, calculate the total vapour pressure of an ideal solution containing 0.4 mole fraction of acetone at the same temperature.
A
669.6 mm Hg
B
710.3 mm Hg
C
721.9 mm Hg
D
685.4 mm Hg
Correct Answer
Option A
Detailed Explanation
The total vapour pressure of an ideal solution can be calculated using Raoult's law: P_total = (x_acetone * P_acetone) + ((1 - x_acetone) * P_chloroform) = (0.4 * 741.8) + (0.6 * 632.8) = 669.6 mm Hg.
Found an issue with this question?