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NEET2019ChemistrySolutionsActual

Which of the following statements is correct regarding a solution of two compounds A and B exhibiting positive deviation from ideal behaviour?

Options

  1. AIntermolecular attractive forces between A-A and B-B are stronger than those between A-B .
  2. B_ mix H=0 at constant T and p
  3. C_ mix V=0 at constant T and p
  4. DIntermolecular attractive forces between A-A and B-B are equal to those between A-B .

Correct answer

A. Intermolecular attractive forces between A-A and B-B are stronger than those between A-B .

Step-by-step solution

Solution exhibits positive deviation from ideal behaviour if the intermolecular interactions, i.e., A-B interactions are more stronger than in pure components, i.e. between A - B or B - B . Thus. option (a) is correct. The remaining options are valid only for ideal solutions.

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