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Identify two assumptions of Kinetic Molecular Theory that are NOT true for real gases.

Identify two assumptions of Kinetic Molecular Theory that are NOT true for real gases.

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Answer #1

Two postulates of kinetic molecular theory of gases are not applicable to real gases:

1. The volume occupied by gas particles is negligible as compared with the total volume of gas.(At high pressure gas molecules are close to each other and their individual volumes cannot be neglected.)

2.The forces of attraction between the gas particles in a gas are weak or negligible.(If there are no intermolecular forces then it would be impossible to condense the gas into liquid. Helium,He having weak intermolecular forces can be liquefied and is used in NMR machines.

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