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The mixture which shows positive deviation from Raoult’s law is

Options

  1. ABenzene + Toluene
  2. BAcetone + Chloroform
  3. CChloroethane + Bromoethane
  4. DEthanol + Acetone

Correct answer

D. Ethanol + Acetone

Step-by-step solution

In solutions showing positive deviation partial pressure of each component A and B is higher than that calculated from Raoult's law, and hence total pressure over the solution is also higher than if the solution were ideal. The intermolecular interaction is weaker as interaction found in any one of the pure components. Hydrogen bond of ethanol gets weakened by addition of acetone.

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