Question

The r.m.s. velocity of gas molecules is 300 m/sec. The r.m.s. velocity of molecules of gas with twice the molecular weight and half the absolute temperature is –

• A. 300 m/sec
• B. 600 m/sec
• C. 75 m/sec
• D. 150 m/sec

Answer 1

Answer: (D)

150 m/sec

Answer 2

V = $\sqrt{\frac{3RT}{M.W}}$