Question 245: Thermodynamics & KTG

Question

According to law of equipartition of energy the molar specific heat of a diatomic gas at constant volume where the molecule has one additional vibrational mode is :-

Accepted Answer

Diatomic gas molecules have three translational degree of freedom, two rotational degree of freedom \& it is given that it has one vibrational mode so there are two additional degree of freedom corresponding to one vibrational mode, so total degree of freedom $=7$
$$
\mathrm{C}_{\mathrm{v}}=\frac{\mathrm{fR}}{2}=\frac{7 \mathrm{R}}{2}
$$

Answer

$$\frac{9}{2}R$$

Answer

$$\frac{5}{2}R$$

Answer

$$\frac{3}{2}R$$

Answer

$$\frac{7}{2}R$$

Thermodynamics & KTG

According to law of equipartition of energy the molar specific heat of a diatomic gas at constant volume where the molecule has one additional vibrational mode is :-

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