The molecules of which gas have highest speed?
A. H2 at -73oC
B. CH4 at 300 K
C. N2 at 1,027oC
D. O2 at 0oC
Answer: Option A
Solution(By Examveda Team)
Among the given gases, hydrogen at −50oC has maximum value of T/M and highest speed.This Question Belongs to General Knowledge >> Chemistry
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The speed of gas is calculated by a relation.
Root Mean square velocity µ(rms) = (3RT/M).
From this relation we can calculate speed.
Only mass could not be taken into consideration here because temperature is specified.
So after calculation.
Speed of Hydrogen gas = 157380 unit.
Speed of Methane gas = 68385 unit.
Speed of Nitrogen gas = 142356 unit.
Speed of oxygen gas = 46128 unit.
Plz say me the explaination