MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryGaseous stateMaxwell's distribution of molecular speeds

Which one of the following statements is not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?

A.the area under the distribution curve remains the

B.The distribution becomes broader

C.The fraction of the molecules with the most✓ Correct

D.The most probable speed increases.

Explanation

We know that, speed T Most probable speed= 2RT/M Average speed= 8RT/πM Root mean square speed 3 / RT M The distribution curve becomes broader. The fraction of molecule decreases when the most probable speed increases. But the area under the curve remains same. Therefore, C is incorrect.

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