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(A) Statement $A$ is correct: By definition, an ideal solution obeys Raoult's law at all concentrations and temperatures.Statement $B$ is correct: The

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$A$ and $B$ only

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(A) Statement $A$ is correct: By definition, an ideal solution obeys Raoult's law at all concentrations and temperatures.Statement $B$ is correct: The mixture of chloroform $(CHCl_3)$ and acetone $(CH_3COCH_3)$ forms hydrogen bonds between them, which makes the interaction stronger than the original solute-solute and solvent-solvent interactions. This leads to a negative deviation from Raoult's law.Statement $C$ is incorrect: The mixture of aniline and phenol shows a negative deviation from Raoult's law because they form strong intermolecular hydrogen bonds, resulting in a decrease in vapor pressure compared to the ideal solution.Therefore, statements $A$ and $B$ are correct.

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