Question

The value of gama=Cp/Cv, for hydrogen, helium and
another ideal diatomic gas X (whose molecules
are not rigid but have an additional vibrational
mode), are respectively equal to
[NEET-2019 (Odisha)]
(1) 7 /5,5/3,7/5
(2)7/5 ,5/3, 9/7
(3 )5/3,7/5,9/7
(4)5/3,7/5,7/5​

Answer 1

Answer:

1

Explanation:

hydrogen is a diatomic gas and helium is a mono atomic gas and another one is ideal diatomic

Cp=7/3;CV=5/3 so gamma=cp/CV=7/5."for diatomic gas".

cp=5/4;CV=3/4 so gamma =cp/CV=5/3

Answer 2

Answer:1

Explanation:

Hydrogen is diatomic gas so value of gamma is $\frac{7}{5}$

$c_p$ for diatomic gas is $\frac{7R}{2}$

$c_v$ for diatomic gas is $\frac{5R}{2}$

helium is mono-atomic so value of gamma is $\frac{5}{3}$

$c_v$ for mono-atomic gas is $\frac{3R}{2}$

$c_p$ for mono-atomic gas is $\frac{5R}{2}$  

For diatomic gas value of gamma is $\frac{7}{5}$