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NEET2009ChemistryStates of MatterActual

The most probable velocity (in cm / s ) of hydrogen molecule at 27^ C will be

Options

  1. A19.3 10^4
  2. B17.8 10^4
  3. C24.93 10^9
  4. D17.8 10^8

Correct answer

B. 17.8 10^4

Step-by-step solution

aligned & Most probable velocity = 8 R T m & T=(27+273)=300 ~K & Molecular mass of H ₂=2 ~g ~mol ⁻¹ & = 8 8.314 10^7 300 3.14 2 & =17.8 10^4 ~cm / s . & aligned

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