Question

Which statement is true about real gases with the correct reason:

a.
Molecules have volume which causes deviations from ideal gases at high temperature .


b.
Molecules have volume which causes deviations from ideal gases at low temperature.


c.
Molecules have volume which causes deviations from ideal gases at low pressure .


d.
Molecules have volume which causes deviations from ideal gases at high pressure.

Answer 1

Volume of a real gas shows deviation from ideal gas on low temperature and high pressure

Only 2 options are correct then

• Molecules have volume which causes deviations from ideal gases at low temperature.
• Molecules have volume which causes deviations from ideal gases at high pressure.

Answer 2

There are 2 possible answers here : b and d.

The Ideal Gas Equation is : PV = nRT

Here, when pressure is increased and temperature is lowered, the volume of the molecules will substantially decrease, which means it has deviated from ideal behavior.