The RMS velocity of a gas is given by, vRMS=M3RT
When O2 dissociates into O its molecular mass becomes 2M. Therefore,
Ratio of RMS speed, v2v1=T2T1×M1M2⇒v2v1=2TT×MM/2⇒v1v2=2
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?
Held on 28 Jun 2022 · Verified 6 Jul 2026.
The velocity of atomic oxygen remains same
The velocity of atomic oxygen doubles
The velocity of atomic oxygen becomes half
The velocity of atomic oxygen becomes four times
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