JEE Main 2004 Chemistry question

Which of the following liquid pairs shows a positive deviation from Raoult's law?

(1)Water - hydrochloric acid
(2)Acetone - chloroform
(3)Water - nitric acid
(4)Benzene - methanolCorrect

Answer: (4)

Solution

Positive deviation occurs when A–B attractions are weaker than A–A and B–B. In benzene–methanol, benzene breaks up the hydrogen-bonded network of methanol, so molecules

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Question ID VK-038404