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

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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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Topics: States of Matter Gases and Liquids (80)
Subject: Chemistry (2512)

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