Answer:
(a) Mixture showing positive deviation from Raoult's law – Ethanol and acetone.
Reason: Solute - solvent interaction is weaker than solute solute and solvent - solvent interactions.
(b) Mixture showing negative deviation from Raoult's law – Chloroform and acetone.
Reason: Solute solvent interaction is stronger than solute solute and solvent - solvent interaction
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