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The van der Waal equation of gas is (P...

The van der Waal equation of gas is
`(P + (n^(2)a)/(V^(2))) (V - nb) = nRT`

A

(i) `CO_(2)` , (ii) `H_(2)`

B

(i) `CH_(4)` , (ii) `CO_(2)`

C

(i) `H_(2)` , (ii) `CO_(2)`

D

`O_(2)`, (ii) `H_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
(i) Order of intermolecular attraction is `CO_(2)gt CH_(4)gt O_(2)gt H_(2)`
In `CO_(2)`, intermolecular forces increases with number of electrons in a molecule.
(ii) Size increases in order of `H_(2)lt O_(2)CH_(4)lt CO_(2)` Hence, `H_(2)` will have lowest value of b.
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Units of a and b in van der Waal's equation (P+(an^(2))/(V^(2)))(V-nb)=nRT are