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In case of positive deviation from Raoult's law, the intermolecular attractive forces between the solute-solvent molecules as compared to those between the solute-solute and solvent-solvent molecules are

Options

  1. Aweaker
  2. Bstronger
  3. Csame
  4. Dindependent of intermolecular forces between solute-solvent molecules.

Correct answer

A. weaker

Step-by-step solution

In case of positive deviation from Raoult's law, the intermolecular attractive forces between the solute-solvent molecules are weaker than those between the solute-solute and solvent-solvent molecules. Therefore, it becomes easy for the solute/solvent molecules to escape from the solution than in pure state. This will increase the vapour pressure and results in positive deviation.

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