KCET 2017 Chemistry Solved Paper

The force of attraction in real gases tend to show slightly lower pressure as compared to ideal gasses.
p‌ideal ‌=p‌real ‌+‌

an2

V2

or p‌real ‌=p‌ideal ‌−‌

an2

V2

where ‘a’ is the constant which measure the magnitude of attractive forces among the molecules of gas ‘n’ is the no. of moles present and ‘V’ is the volume of gas present.