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The rms speed of oxygen molecules in a g...

The rms speed of oxygen molecules in a gas in a gas is v. If the temperature is doubled and the oxygen molecules dissociate into oxygen atoms, the rms speed will become

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`v_("rms")=sqrt((3RT)/(M))`
`v_("rms")propsqrt((T)/(M))`
When oxygen gas dissociates into atomic oxygen, its atomic mass `M` will become half. Temperature is doubled. So, from Eq. (i) `v_("rms")` will become two times.
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