Which one of the following graphs accurately represents the plot of partial pressure of CS 2 vs its mole fraction in a mixture of acetone and CS 2 at constant temperature?

Chemistry · Solutions and Colligative Properties

JEE Main 2026 — 23 January, Morning Shift — Question 50

Which one of the following graphs accurately represents the plot of partial pressure of $\mathrm{CS}_{2}$ vs its mole fraction in a mixture of acetone and $\mathrm{CS}_{2}$ at constant temperature?

Option A:
Correct
Option B:
Option C:
Option D:

Answer: A

Step-by-step solution

Mixture of $\mathrm{CS}_{2}$ and show positive deviation $\mathrm{P}_{\mathrm{CS}_{2}}>\mathrm{P}_{\mathrm{CS}_{2}}^{\mathrm{o}} \cdot \mathrm{X}_{\mathrm{CS}_{2}}$

Answer key and solution verified before publishing.

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Exam: JEE Main 2026
Paper: 23 January, Morning Shift
Subject: Chemistry
Chapter: Solutions and Colligative Properties
Topic: Liquid in Liquid Solutions (Raoult's Law)