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Question 31006
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Kinetic Theory and Thermodynamics: RMS Speed MCQ

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RMS SpeedMediumQuestion 31006

Question

RMS speed of gas molecules is:
  1. A
    √(3RT/M)
    Correct
  2. B
    √(2RT/M)
  3. C
    √(8RT/πM)
  4. D
    √(RT/M)

Correct answer

√(3RT/M)

Explanation

v_rms = √(3RT/M) where M is molar mass (kg/mol). Derived from (1/2)Mv_rms² = (3/2)RT.

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