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It is observed that H 2 and He gases always show positive deviation from ideal behaviour i.e., Z > 1. This is because

Options

  1. Athe value of 'a' is very large due to high attractive forces
  2. Bthe weak intermolecular forces of attraction due to which 'a' is very small and a V 2 is negligible
  3. Cthe value of 'b' is very large due to large size of the molecules
  4. Dboth 'a' and 'b' are very small and negligible

Correct answer

B. the weak intermolecular forces of attraction due to which 'a' is very small and a V 2 is negligible

Step-by-step solution

Due to weak intermolecular forces of attraction, H 2 and He gases show the value of Z > 1 and always show positive deviation at any pressure.

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