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  • Answer please! The ratio between the r.m.s. velocity of H2 at 50 K and that of O2 at 800 K is:

The ratio between the r.m.s. velocity of H2 at 50 K and that of O2 at 800 K is:

  • Option 1)

    4

  • Option 2)

    2

  • Option 3)

    1

  • Option 4)

    1/4

 

Answers (1)

best_answer

As we learnt in 

Rms speed of gas molecules -

Vrms=\sqrt{(3RT/M)}

- wherein

M- Molecular Mass , R- Gas Constant , T- Temperature

 

\frac{\left ( V_{rms} \right )_{1}}{\left ( V_{rms} \right )_{2}}= \sqrt{\frac{T_{1}M_{2}}{M_{1}T_{2}}}


Option 1)

4

Incorrect

Option 2)

2

Incorrect

Option 3)

1

Correct

Option 4)

1/4

Incorrect

Posted by

Plabita

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