Published by:
CGP EDU Academic Team
Published on: September 12, 2026
If the r.m.s speed of chlorine molecule is 490 ms -1 at 27°C, the r.m.s speed of argon molecules at the same temperature will be (Atomic mass of argon = 39.9 u, molecular mass of chlorine = 70.9 u)
Text Solution
Verified by ExpertsThe correct answer is:
B
The formula to calculate the rms speed of the argon molecules is given by
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The formula to calculate the rms speed of chlorine molecule is given by
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Divide equation by equation and simplify to obtain the required ratio.
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Substitute the values of the known parameters into equation and solve to calculate the required value.
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