Question

Which of the following represents total kineticenergy of one mole of the gas

• A. 1/2 RT
• B. 3/2 RT
• C. $(C_p-C_v)$ R
• D. 2/3 RT

Answer 1

Answer: (B)

3/2 RT

Answer 2

PV = $\frac{1}{3} \, mnv^2 = \frac{2}{3} \times \frac{1}{2} \, mnv^2 = \frac{2}{3}$ KE PV = RT $\therefore$ 2/3 KE = RT or KE = 3/2 RT