Q34Multiple choice
For real gases the relation between p, V and T is given by van der Waals equation: ⎛ an 2 ⎞ ⎜⎝ p + 2 ⎟⎠ (V -nb) = nRT where ‘a’ and ‘b’ are van der Waals constants, ‘nb’ is approximately equal to the total volume of the molecules of a gas. ‘a’ is the measure of magnitude of intermolecular attraction.
- (i)Arrange the following gases in the increasing order of ‘b’. Give reason. O2, CO2, H2, He
- (ii)Arrange the following gases in the decreasing order of magnitude of ‘a’. Give reason. CH4, O2, H2
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(i) Arrange the following gases in the increasing order of ‘b’. Give reason. O2, CO2, H2, He
(ii) Arrange the following gases in the decreasing order of magnitude of ‘a’. Give reason. CH4, O2, H2