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In van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is:

1. (V – b)
2. (RT)⁻¹
3. (p + a / v²)
4. RT

Correct answer: (p + a / v²)

Solution

The term (p + a / v²) accounts for the attractive and repulsive forces between molecules in a non-ideal gas.

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