Question 316: Thermodynamics & KTG

Question

Which statements are correct about degrees of freedom ?
(A) A molecule with n degrees of freedom has n$$^{2}$$ different ways of storing energy.
(B) Each degree of freedom is associated with $$\frac{1}{2}$$ RT average energy per mole.
(C) A monatomic gas molecule has 1 rotational degree of freedom where as diatomic molecule has 2 rotational degrees of freedom.
(D) $$\mathrm{CH}_{4}$$ has a total of 6 degrees of freedom.
Choose the correct answer from the options given below :

Accepted Answer

Statement A is incorrect, statement B is correct by equipartition of energy. Statement C is incorrect as monoatomic does not have any rotational degree of freedom and CH
4
is a polyatomic gas so it has 6 degree of freedom. So only B and D are correct.

Answer

(B) and (C) only

Answer

(B) and (D) only

Answer

(A) and (B) only

Answer

(C) and (D) only

Thermodynamics & KTG

Choose the correct answer: