Question

Identify the correct statement:
(1) For a real gas at low pressure attractive forces dominates.
(2) At very low pressure all gases behaves ideally.
(3) At high pressure compressiblity of gas will be less.
(4) All are correct.​

Answer 1

Answer:

1. For example, when attractive forces dominate, the real gas will have a smaller volume than the ideal gas, as the attractive forces pull the particles closer together. ... All gases approach Z = 1 at very low pressures, when the average spacing between particles is large.

2. Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them.

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