Question

The root mean square speed of the molecules of a diatomic gas is v. When the temperature is doubled, the molecules dissociate into two atoms. The new root mean square speed of the atom is –

• A. $\sqrt{2}$v
• B. v
• C. 2v
• D. 4v

Answer 1

Answer: (C)

2v

Answer 2

V_RMS = $\sqrt{\frac{3RT}{M.W.}}$ \ (2v)