Question

What is the ratio of urms to ump in oxygen gas at 298k?

(a) 1.124

(b) 1.224

(c) 1.228

(d) 1.128

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

I'd like to ask this question from States of Matter topic in division States of Matter of Chemistry – Class 11

Answer 1

Right answer is (b) 1.224

Explanation: The ratio of root mean square speed, represented as urms to the most probable speed, represented as ump is always the same for identical conditions and same gas. It is \(\sqrt{3RT/M}\) divided by \(\sqrt{8RT/πM}\) = 1.224.