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The behavior of real gases approaches that of ideal gas in which of these following conditions?

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in Physics – Class 11 by (74.2k points)
The behavior of real gases approaches that of ideal gas in which of these following conditions?

(a) Low pressure & low temperature

(b) High Pressure & high temperature

(c) Low pressure & high temperature

(d) high pressure & low temperature

This question was addressed to me in an interview for internship.

My enquiry is from Kinetic Theory topic in portion Kinetic Theory of Physics – Class 11

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The correct choice is (c) Low pressure & high temperature

The best I can explain: Ideal gas is based on the assumptions of kinetic theory of gases(KTG). At low pressure and high temperature the intermolecular forces become less significant and the size of molecules becomes less as compared to separation between them. These are two postulates of KTG and hence in these conditions real gas behavior is similar to that of ideal gases.

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