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Question: Answered & Verified by Expert

Consider a sample of oxygen behaving like an ideal gas. At 300 K, the ratio of root-mean-square (RMS) velocity to the average velocity of the gas molecule would be :

(Molecular weight of oxygen is 32 g mol-1; R=8.3 J K-1 mol-1)

PhysicsKinetic Theory of GasesJEE MainJEE Main 2021 (18 Mar Shift 2)
Options:
  • A 33
  • B 83
  • C 3π8
  • D 8π3
Solution:
1907 Upvotes Verified Answer
The correct answer is: 3π8

vrms=3RTM

vavg=8πRTM

vrmsvavg=3π8

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