ThermodynamicsMedium
Question
At a constant volume the specific heat of a gas is 0.075 and its molecular weight is 40. The gas is :
Options
A.Monoatomic
B.Diatomic
C.Triatomic
D.None of the aboveNone of the above
Solution
We know that, Molar heat capacity at constant volume,
Cv = Specific heat at constant volume × Mol. wt.
= 0.075 × 40 = 3.0 cal
∵ Cp - Cv = R
or Cp = R + Cv 2 + 3 = 5
Now
= γ, ∴ γ = 
= 1.66
This value shows that the gas is mono atomic.
Cv = Specific heat at constant volume × Mol. wt.
= 0.075 × 40 = 3.0 cal
∵ Cp - Cv = R
or Cp = R + Cv 2 + 3 = 5
Now
= γ, ∴ γ = = 1.66This value shows that the gas is mono atomic.
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