The root mean square speed of oxygen molecules at a certain absolute temperature is v . If the temperature is doubled and the oxygen gas dissociates into atomic oxygen, the root mean square speed would be -

Question

The root mean square speed of oxygen molecules at a certain absolute temperature is v . If the temperature is doubled and the oxygen gas dissociates into atomic oxygen, the root mean square speed would be -, v, 2 v, 2 v, 2 2 v

MARKS App · Accepted Answer

RMS speed is given by v r m s = v = 3 R T M New temperature T ′ = 2 T New molar mass M ′ = M 2 ∴ v rms new = 3 R ( 2 T ) M 2 v rms new = 2 v

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