Which of the following are correct statements ?
van der Waals constant $a$ is a measure of attractive force
van der Waals constant $b$ is also called co-volume or excluded volume
$b$ is expressed in $L m o l^{- 1}$
$a$ is expressed in $a t m L^{2} m o l^{- 1}$

Question

Which of the following are correct statements ?
van der Waals constant $a$ is a measure of attractive force
van der Waals constant $b$ is also called co-volume or excluded volume
$b$ is expressed in $L m o l^{- 1}$
$a$ is expressed in $a t m L^{2} m o l^{- 1}$

Toppr Admin · Accepted Answer

Van der Waals constant a is a indirect measure of attractive force- Gases with higher values of a can be easily liquified-Van der Waals constant b is also called co-volume or excluded volume- It is the effective volume of a gas- When gas molecules have constant value of b over wider range of temperature and pressure- the gas molecules are incompressible-b has units L-xA0-mol-x2212-1 or ml3-xA0-mol-x2212-1- The units of a are atm-xA0-L2-xA0-mol-x2212-1-

Column - I	Column-II
(a) Coefficient of viscosity	(p) $L m o l^{- 1}$
(b) van der Waals constant 'b'	(q) $N s m^{- 2}$
(c) Molar volume of gas at STP = 22.4	(r) $P a s$
(d) van der Waals constant 'a'	(s) $L^{2} a t m m o l^{- 2}$

Which of the following are correct statements ?van der Waals constant a is a measure of attractive forcevan der Waals constant b is also called co-volume or excluded volumeb is expressed in L mol−1a is expressed in atm L2mol−1

Which of the following are correct statements ?
van der Waals constant $a$ is a measure of attractive force
van der Waals constant $b$ is also called co-volume or excluded volume
$b$ is expressed in $L m o l^{- 1}$
$a$ is expressed in $a t m L^{2} m o l^{- 1}$