A gas described by van der Waals equation .

Options

A. behaves similar to an ideal gas in the limit gas in the limit of large molar volumes
B. behaves similar to an ideal gas in the limit of large pressures
C. is characterised by van der Waals coefficients that are dependent on identity of the gas but are independent of the pressure
D. has the pressure that is lower than the pressure exerted by the same behaving ideally

Answer

A,B,C,D

Explanation

van der Waals equation is
`(P+(an^(2))/(V^(2)))(V-nb)=nRT`.
(a) is correct because for large molar volumes, `an^(2)//V^(2)` is small and can be neglected in comparison to P and nb can be neglected in comparison to V. Eqn. becomes PV=nRT.
(c ) is correct because van der Waals coefficients depend only on the nature of the gas.
(d) is correct because due to inward pull on the molecules striking the wall, the pressure is lower.