Question

What is the mean velocity of one Mole neon gas at a temperature of 400 Kelvin?

(a) 11.533 m/s

(b) 357.578 m/s

(c) 367.79 m/s

(d) 34 m/s

This question was addressed to me in an interview.

Question is taken from States of Matter topic in chapter States of Matter of Chemistry – Class 11

Answer 1

The correct option is (a) 11.533 m/s

For explanation: The formula for mean velocity of a gas is given by the expression \(\sqrt{2RT/M}\). for one mole of neon gas M is taken as 0.02 kg, temperature as 400 k, R as 8.314 kgm^2s^-2, so by substituting we get an answer as 11.533 m/s.