MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryGaseous stateMaxwell's distribution of molecular speeds

The ratio between the root mean square speed of H2 at 50K and that of O2 at 800 K is

A.4

B.2

C.1✓ Correct

D.¼

Explanation

Root mean square speed 3RT / M For hydrogen, Root mean square speed 3R 50 / 2 x For oxygen, Root mean square speed 3R 800 / 32 x Ratio of speeds 50 / 2 / 800/ 32 25 / 25 1

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