Cv for O2 is ( 5/2) R with increase in temperature it becomes ( 7/2) R due to a

Question

Cv for O2 is ( 5/2) R with increase in temperature it becomes ( 7/2) R due to a (A) translational motion (B) rotational motion (C) vibrational motion (D) None of the above

Tardigrade Admin · Accepted Answer

Oxygen is a diatomic gas and hence has 5 degree of freedom 3 translational and 2 rotational.
As t e eat is given to oxygen

C_{v}

increases rom

\frac{5 R}{2} t o \frac{7 R}{2}

Hence, internal energy (

△ U = n C_{v} △ T)

increases. With the increase in internal energy the atoms within the molecule may also vibrate with respect to each other. In such case the molecule will have an additional degree of freedom due to vibrational motion.

Q. Cv​ for O2​ is 25​ R with increase in temperature it becomes 27​ R due to a

translational motion

rotational motion

vibrational motion

None of the above

Q. $C_{v}$ for $O_{2}$ is $\frac{5}{2}$ R with increase in temperature it becomes $\frac{7}{2}$ R due to a