Question

The translational kinetic energy of gas molecule for one mole of the gas is equal to

• A. $\frac{3}{2}RT$
• B. $\frac{2}{3}RT$
• C. $\frac{1}{2}RT$
• D. $\frac{2}{3}KT$

Answer 1

Answer: (A)

$\frac{3}{2}RT$

Answer 2

Kinetic energy for 1 mole gas $E = \frac{f}{2}RT$

Ž $E_{\text{Translation}} = \frac{3}{2}RT$

($\because$For all gases translational degree of freedom f = 3)