Q.
At 298 K, which of the following gases has the lowest average molecular speed?
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a
CO2 at 0.20atm
b
He at 0.40 atm
c
CH4 at 0.80atm
d
NO at 1.00 atm
answer is A.
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Detailed Solution
uav=8pVπM u∝pM=0.2044=0.067 for CO2 =0.404=0.32 for He =0.8016=0.22 for CH4 =130=0.18 for NO
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