For real gases van der Waals equation is written as ( p + (an2/V2) ) (V - nb) = nRT Where 'a' and 'b' are van der Waals constants . Two sets of gases are: (I) O2, CO2, H2 and He (II) CH4, O2 and H2 The gases given in set-I in increasing order of 'b' and gases given in set-II in decreasing order of 'a', are arranged below. Select the correct order from the following :

Question

For real gases van der Waals equation is written as ( p + (an2/V2) ) (V - nb) = nRT Where 'a' and 'b' are van der Waals constants . Two sets of gases are: (I) O2, CO2, H2 and He (II) CH4, O2 and H2 The gases given in set-I in increasing order of 'b' and gases given in set-II in decreasing order of 'a', are arranged below. Select the correct order from the following : (A) (I) O2 < He < H2 < CO2 (II) H2 > O2 > CH4 (B) (I) H2 < He < O2 < CO2 (II) CH4 > O2 > H2 (C) (I) H2 < O2 < He < CO2 (II) O2 > CH4 > H2 (D) (I) He < H2 < CO2 < O2 (II) CH4 > H2 > O2

Tardigrade Admin · Accepted Answer

As per actual data's
sequence of Vander Wall constant (a)

v a l u e H_{2} 0.244 < He 0.34 < O_{2} 1.36 < C O_{2} 3.54

and sequence of Vander Wall constant (b)

v a l u e C H_{4} 0.042 > O_{2} 0.031 > H_{2} 0.026

(I) $O_{2} < He < H_{2} < C O_{2}$ (II) $H_{2} > O_{2} > C H_{4}$

(I) $H_{2} < He < O_{2} < C O_{2}$ (II) $C H_{4} > O_{2} > H_{2}$

(I) $H_{2} < O_{2} < He < C O_{2}$ (II) $O_{2} > C H_{4} > H_{2}$

(I) $He < H_{2} < C O_{2} < O_{2}$ (II) $C H_{4} > H_{2} > O_{2}$

As per actual data's
sequence of Vander Wall constant (a)
$v a l u e H_{2} 0.244 < He 0.34 < O_{2} 1.36 < C O_{2} 3.54$
and sequence of Vander Wall constant (b)
$v a l u e C H_{4} 0.042 > O_{2} 0.031 > H_{2} 0.026$

(I) O2​<He<H2​<CO2​ (II) H2​>O2​>CH4​

(I) H2​<He<O2​<CO2​ (II) CH4​>O2​>H2​

(I) H2​<O2​<He<CO2​ (II) O2​>CH4​>H2​

(I) He<H2​<CO2​<O2​ (II) CH4​>H2​>O2​

As per actual data's sequence of Vander Wall constant (a) value​H2​0.244​<​He0.34​<​O2​1.36​<​CO2​3.54​ and sequence of Vander Wall constant (b) value​CH4​0.042​>​O2​0.031​>​H2​0.026​

(I) $O_{2} < He < H_{2} < C O_{2}$ (II) $H_{2} > O_{2} > C H_{4}$

(I) $H_{2} < He < O_{2} < C O_{2}$ (II) $C H_{4} > O_{2} > H_{2}$

(I) $H_{2} < O_{2} < He < C O_{2}$ (II) $O_{2} > C H_{4} > H_{2}$

(I) $He < H_{2} < C O_{2} < O_{2}$ (II) $C H_{4} > H_{2} > O_{2}$

As per actual data's
sequence of Vander Wall constant (a)
$v a l u e H_{2} 0.244 < He 0.34 < O_{2} 1.36 < C O_{2} 3.54$
and sequence of Vander Wall constant (b)
$v a l u e C H_{4} 0.042 > O_{2} 0.031 > H_{2} 0.026$