NEET 2026 Chemistry question
Consider the following statements about the solutions formed by mixing two liquids. A. An ideal solution thus formed obeys Raoult's law throughout the composition range. B. Mixture of chloroform and acetone shows negative deviation from Raoult's law. C. Mixture of aniline and phenol shows positive deviation from Raoult's law.
Answer: (1)
Solution
A is true: by definition an ideal solution obeys Raoult's law at all concentrations and temperatures (, ). B is true: chloroform (C-H acidic) forms hydrogen bonds with the carbonyl oxygen of acetone; A-B attractions exceed A-A and B-B, so vapour pressure
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