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Real Gases

State True or...

Question

State True or False.
Real gases show deviation from ideal behaviour at high temperature and low pressure.

A

True

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B

False

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Solution

The correct option is B False
The given statement is false.
Real gases show deviation from ideal gas at low temperature and high pressure. At high temperatures and low pressure, the gases behave like an ideal gas.

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Q. Gases show deviations from ideal behaviour at high temperatures and high pressures.

Q. Statement A: Gases deviate from their ideal behaviour at low temperatures.
Statement B: At low temperatures, the molecular attractions become significant. This leads to a deviation from the ideal behaviour of a gas.

Q. Statement: Real gases follow the ideal gas law (no deviation) at sufficiently low densities

State whether the given statement is true or false.

Q. Real gases show deviations from ideal gas law because molecules interact with each other. At high pressures molecules of gases are very close to each other. At very low temperatures intermolecular forces become significant. The deviation from ideal gas behaviour can be measured in terms of compressibility factor

Z

, which is the ratio of product

P V

n R T

Z = P V / n R T

) . Taking the pressure and volume corrections due to intermolecular forces vander waals corrected the ideal gas equation.
In vander waals equation of state for non ideal gases, the term that accounts for intermolecular forces

Assertion: Gasses obey Boyle's law at high temperature and low pressure only.

Reason: At low pressure and high temperature, gasses would behave like ideal gases.

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