Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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What Type of Deviation is Shown by a Mixture of Ethanol and Acetone ? Give Reason. - Chemistry

What type of deviation is shown by a mixture of ethanol and acetone ? Give reason.

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Solution 1

Ethanol and acetone shows +ve deviation because both are non polar compounds and after mixing force of attraction decreases

Like particle force of attraction > unlike particle force of attraction.

Solution 2

A mixture of ethanol and acetone shows positive deviation from Raoult's Law. Pure ethanol possesses hydrogen bonding. Introduction of acetone between the molecules of ethanol results in breaking of some of these hydrogen bonds. Due to weakening of interactions, the solution shows positive deviation from Raoult’s law.

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