Question

Explain why a solution of chloroform and acetone shows negative deviation from Raoult’s law.

Answer 1

When acetone and chloroform are mixed together a hydrogen bond is formed between them which increases inter molecular attraction between them and hence decreases the vapour pressure

Answer 2

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A mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law. This is because chloroform molecule is able to form hydrogen bond with acetone molecule as shown.

Chloroform-chloroform interactions are stronger than chloroform-acetone interactions.

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