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Considering the formation, breaking and ...

Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult's law ?

A

Methanol and acetone

B

Chaloroform and acetone.

C

Nitric acid and water

D

Phenol and aniline.

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The correct Answer is:
A
Explanation : (A - A)* interaction is greater than the (A - B)** interaction. Intermolecular hydrogen bonding in methanol is more than methanol and acetone separately. So, methanol and acetone mixture will show a positive deviation from Raoult.s law.
(A - A)* Interaction represents interaction between particles / molecules of acetone among which there is no hydrogen bonding.
(A - B)** Interaction is the interaction between the particles / molecules of acetone and methanol.
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