Question

A gas that follows Boyle's law, Charles' law and Avogadro's law is called an ideal gas. Under what conditions a real gas behaves as ideal gas?

• A. Under low pressure and temperature
• B. Under high pressure and temperature
• C. Under high pressure and low temperature
• D. Under low pressure and high temperature

Answer 1

Answer: (D)

Under low pressure and high temperature

Under low pressure and high temperature,the potential energy between the gas molecules becomes less operative due to the intermolecular forces and the size of molecules also becomes less significant .Hence a real gas starts behaving as an ideal gas under such conditions.