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Which of the following shows negative deviation from Raoult's law?

Options

  1. ABenzene-acetone
  2. BBenzene-chloroform
  3. CBenzene-ethanol
  4. DBenzene-carbon tetrachloride

Correct answer

B. Benzene-chloroform

Step-by-step solution

Negative deviation from Raoult's law are noticed when solvent-solvent and solute-solute interactions are weaker than solute-solvent intractions. In such solutions, the mixing of two components leads to the strengthening of intermolecular attractions and thus results in lesser values of vapour pressure of solution. Benzene-chloroform mixtures shows negative deviation.

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