Acetone (BP=329 K) and CS₂ (BP=320 K) are mixed in a definite composition, so that the mixture of the two behave like pure liquid and boils at 312K, then it is

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Not an Azeotrope

Maximum boiling azeotrope

Minimum boiling azeotrope

Rectified spirit

answer is C.

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Detailed Solution

Raoult's law states that the mole fraction of the solute component is directly proportional to its partial pressure.

When carbon disulphide is added to acetone, solute-solvent interactions are weaker than those of solute-solute and solvent-solvent interactions.
This increases vapour pressure and therefore results in positive deviation from Raoult's law.
Minimum boiling azetropes are formed by this mixture.

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