Question

The rms speed of gas molecules is given by

(A) 2.5 √[M_o/(RT)]

(B) 2.5 √[(RT)/M_o]

(C) 1.73 √[(RT)/M_o]

(D) 1.73 √[M_o/(RT)]

Answer 1

The correct option (C) 1.73 √[(RT)/M_o]

Explanation:

V_rms = √(3RT/M_o)

= √3 √(RT/M_o)

= 1.73 √(RT/M_o)