Questions
At what temperature is the root mean square velocity of gaseous hydrogen molecules is equal to that of oxygen molecules at ?
a
20 K
b
80 K
c
-73 K
d
3 K
detailed solution
Correct option is A
For oxygen v02 = 3RT02MO2 andFor hydrogen vH2 = 3RTH2MH2According to problem = 3RTO2MO2 = 3RTH2MH2⇒TO 2MO2 = TH2MH2 ⇒ 47 + 27332 = TH2MH2⇒ TH2 = 32032×2 = 20 KTalk to our academic expert!
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The rms velocity of a gas at a certain temperature is times than that of the oxygen molecules at that temperature. The gas can be
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