Increasing order of rms velocities of H₂,O₂,N₂ and HBr is

Increasing Order Of Rms Velocities Of Hon And Hbr Is Chemistry QuestionIncreasing Order Of Rms Velocities Of Hon And Hbr Is Chemistry Question

Increasing order of rms velocities of H₂,O₂,N₂ and HBr is

Options

(a) H₂,O₂,N₂,HBr
(b) HBr,O₂,N₂,H₂
(c) H₂,N₂,O₂, HBr
(d) HBr,N₂,O₂,H₂

Correct Answer:

HBr,O₂,N₂,H₂

Explanation:

Increasing order of rms velocities of H₂, O₂, N₂ and HBr is HBr,O₂,N₂,H₂
rms velocity is inversely proportional to square root of molar mass M,
ν(rms) = √(3RT / M)
.·. rms velocity decreases with increase in molar mass.

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