The specific heats, cp and cv of a gas of diatomic molecules, A, are given (in units of j mol−1
) by 29 and 22, respectively. Another gas of diatomic molecules, B, has the corresponding values 30 and 21. If they are treated as ideal gases, then:
(a) A is rigid but B has a vibrational mode.
(b) A has a vibrational mode but has none.
(c) Both A and B have a vibrational mode each.
(d) A has a vibrational mode and B has two.
) by 29 and 22, respectively. Another gas of diatomic molecules, B, has the corresponding values 30 and 21. If they are treated as ideal gases, then:Question ID - 51267 | SaraNextGen Top Answer The specific heats, cp and cv of a gas of diatomic molecules, A, are given (in units of j mol−1 ) by 29 and 22, respectively. Another gas of diatomic molecules, B, has the corresponding values 30 and 21. If they are treated as ideal gases, then:
(a) A is rigid but B has a vibrational mode.
(b) A has a vibrational mode but has none.
(c) Both A and B have a vibrational mode each.
(d) A has a vibrational mode and B has two.
The specific heats, cp and cv of a gas of diatomic molecules, A, are given (in units of j mol−1 ) by 29 and 22, respectively. Another gas of diatomic molecules, B, has the corresponding values 30 and 21. If they are treated as ideal gases, then:
(a) A is rigid but B has a vibrational mode.
(b) A has a vibrational mode but has none.
(c) Both A and B have a vibrational mode each.
(d) A has a vibrational mode and B has two.
For (A)CP=29, CV=22
For(B)CP=30 CV=22
∴ 
=
=
=1.31
When A has vibrational degree of freedom, then 
=
=1.29.
=
=
=1.42
B has no vibrational degree of freedom