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AP EAMCET20225 Jul 2022Evening ShiftPhysicsKinetic Theory of GasesActual

The rms speed of oxygen and room temperature is about 500 ~ms ⁻¹ . The rms speed of hydrogen at the same temperature is about

Options

  1. A125 ~m ~s ⁻¹
  2. B2000 ~m ~s ⁻¹
  3. C8000 ~m ~s ⁻¹
  4. D500 ~m ~s ⁻¹

Correct answer

B. 2000 ~m ~s ⁻¹

Step-by-step solution

We have aligned & V _ rms = 3 RT M ₀ , where M ₀= molecular mass & V _ rms 1 M ₀ aligned ( V _ rms )_ H ₂ = ( V _ rms )_ 0.2 ( 2 32 )^ 1 / 2 =500 4=2000 ~m / s

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