Question
What modifications were applied by Vander Waal to overcome the deviations of the gases from ideal gas behaviour?
Solution
Vander Waal applied corrections for both molecular volume and molecular attraction and has given a new equation in place of the general gas equation, PV= n RT. This equation is called Vander Waal’s equation of state.
[For n moles of the gas]
where a and b are constants called Vander Waal's constant and n represents the number of moles of the gas present in volume V litres of the gas.
For one mole of a gas, the equation reduces to
[For n moles of the gas]
where a and b are constants called Vander Waal's constant and n represents the number of moles of the gas present in volume V litres of the gas.
For one mole of a gas, the equation reduces to
