4.0 g of a gas occupies 22.4 1itres at NTP. The specific heat capacity of the gas at constant volume is 5.0 
. Ifthe speed of sound in this gas at NTP is 952 
, then the heat capacity at constant pressure is (Take gas constant 
)
A
7.0 
B
8.5 
C
8.0 
D
7.5 
Text Solution
Verified by ExpertsThe correct answer is:
C
Since 4.0 
of a gas occupies 22.4litres at NTP, so the molecular mass ofthe gas is
As the speed of the sound in the gas is
where 
is the ratio of two specific heats, 
is the universal gas constant and 
is the temperature of the gas?
Here, 
kg 
mol -1 and 
(at NTP)
By definition, 
or 
But 
and 
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