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Question

Which of the following solutions is an example of negative deviation from Raoult's law?

A
Acetone + Ethanol
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B
Carbon tetrachloride + Chloroform
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C
Acetone + Chloroform
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D
Water + Ethanol
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Solution

The correct option is B Acetone + Chloroform
(A – B) are stronger than the intermolecular interactions in A – A and B – B.
For example, acetone and chloroform form a non-ideal solution showing negative deviation from Raoult's law.
Volume of solution is less than volume of solute and solvent.

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