Question

For real gases van der Waals equation is written as
+
(V - nb) = n RT, where 'a' and 'b' are van
der Waals constants. Two sets of gases are :
(1) O,, CO2, H, and He
(II) CH, O, and H,
The gases given in set-I in increasing order of'b' and
gases given in set-ll in decreasing order of 'a', are
arranged below. Select the correct order from the
following:
[AIPMT (Mains)-2012]
(1) (1) He <H> <CO, <0,(II) CH, >H, > 0,
(2) (1) O, < He <H, <CO, (II) H, >0, > CHA
(3) (1) H, < He <0, <CO, (II) CH, > 0,>H,
- (4) (1) H, <0 < He < CO, (II) O>CH > H,
2
V​

Answer 1

Answer:

For real gases van der Waals equation is written as

+

(V - nb) = n RT, where 'a' and 'b' are van

der Waals constants. Two sets of gases are :

(1) O,, CO2, H, and He

(II) CH, O, and H,

The gases given in set-I in increasing order of'b' and

gases given in set-ll in decreasing order of 'a', are

arranged below. Select the correct order from the

following:

[AIPMT (Mains)-2012]

(1) (1) He <H> <CO, <0,(II) CH, >H, > 0,

(2) (1) O, < He <H, <CO, (II) H, >0, > CHA

(3) (1) H, < He <0, <CO, (II) CH, > 0,>H,

- (4) (1) H, <0 < He < CO, (II) O>CH > H,

2

Jj

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