The value of γ(=(Cp/Cy)) , for hydrogen, helium and another ideal diatomic gas X (whose molecules are not rigid but have an additional vibrational mode), are respectively equal to :

Question

The value of &gamma;(=(Cp/Cy)) , for hydrogen, helium and another ideal diatomic gas X (whose molecules are not rigid but have an additional vibrational mode), are respectively equal to : (A) (7 /5 ), ( 5/ 3), ( 9/7 ) (B) ( 5/ 3), ( 7/ 5), ( 9/7 ) (C) (5 / 3), ( 7/ 5), ( 7/5 ) (D) (7 /5 ), (5 /3 ), (7 /5 )

Tardigrade Admin · Accepted Answer

Hydrogen → 7/5 (diatomic), Helium → 5/3 (monoatomic), X → 9/7

Q. The value of $γ (= \frac{C _{p}}{C _{y}})$ , for hydrogen, helium and another ideal diatomic gas $X$ (whose molecules are not rigid but have an additional vibrational mode), are respectively equal to :

$\frac{7}{5}, \frac{5}{3}, \frac{9}{7}$

$\frac{5}{3}, \frac{7}{5}, \frac{9}{7}$

$\frac{5}{3}, \frac{7}{5}, \frac{7}{5}$

$\frac{7}{5}, \frac{5}{3}, \frac{7}{5}$

Hydrogen $\to 7/5$ (diatomic),
Helium $\to 5/3$ (monoatomic),
$X \to 9/7$

Q. The value of γ(=Cy​Cp​​) , for hydrogen, helium and another ideal diatomic gas X (whose molecules are not rigid but have an additional vibrational mode), are respectively equal to :

57​,35​,79​

35​,57​,79​

35​,57​,57​

57​,35​,57​