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COMEDK2012ChemistryStates of Matter

The RMS velocity of CH ₄, He and SO ₂ are in the ratio of

Options

  1. A16: 4: 64
  2. B2: 1: 4
  3. C2: 4: 1
  4. D1: 4: 2

Correct answer

C. 2: 4: 1

Step-by-step solution

v_ rms = 3 R T M v_ rms 1 M , where M= molecular mass aligned & v_ rms _ ( CH ₄ ) : v_ rms _ ( He ) : v_ rms _ ( SO ₂ ) & 1 16 : 1 4 : 1 64 1 4 : 1 2 : 1 8 & 2: 4: 1 aligned

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