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  • What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and oxygen molecule dissociates into atomic oxygen?Opt

What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and oxygen molecule dissociates into atomic oxygen?

Option: 1

The velocity of atomic oxygen remains same


Option: 2

The velocity of atomic oxygen doubles


Option: 3

The velocity of atomic oxygen becomes half 


Option: 4

The velocity of atomic oxygen  becomes four times


Answers (1)

best_answer

\mathrm{V_{r ms}=\sqrt{\frac{3 RT}{M_{0}}}}
T is double and the Oxygen molecule is dissociated into atomic oxygen. Hence the molar mase is halved.
V_{r m s}=\sqrt{\frac{3 R \times 2 T}{\frac{M_{0 }}{2}}}=2 V_{\text {rms }}
Hence option 2 is correct.

Posted by

Pankaj Sanodiya

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