Question

Under which of the following conditions is the law PV = RT obeyed most closely by a real gas

• A. High pressure and high temperature
• B. Low pressure and low temperature
• C. Low pressure and high temperature
• D. High pressure and low temperature

Answer 1

The correct option is C Low pressure and high temperature

At low pressure and high temperature real gas obey PV = RT i.e. they behave as ideal gas because at high temperature we can assume that there is no force of attraction or repulsion among the molecules and the volume occupied by the molecules is negligible in comparison to the volume occupied by the gas.