Question

Which of the following is greater for identical conditions and the same gas?

(a) most probable speed

(b) average speed

(c) root mean square speed

(d) most probable and average speed have the same value

This question was addressed to me by my school principal while I was bunking the class.

My question is based upon States of Matter topic in section States of Matter of Chemistry – Class 11

Answer 1

The correct option is (c) root mean square speed

Explanation: According to the formula, the root mean square speed is greater than the average speed and the average speed is greater than the most probable speed at given identical conditions and for the same gas.