Questions
If is the ratio of two specific heats of a gas, the number of degrees of freedom of a molecule of the gas is:
a
252(γ-1)
b
3γ−12γ−1
c
2γ−1
d
92(γ-1)
detailed solution
Correct option is C
molar specific heat of a gas at constant volume is Cv=f.R2 here f is degree of freedom , R is universal gas constant from difference of specific heatsCp=Cv+R substitute the value of Cv =fR2+R=fR12+1f Cp=fR(f+22f)specific heat ratio γ=CpCv , substitute the values of specific heats =fRf+22ffR2 ⇒γ=f+2f ⇒γ=1+2f ⇒2f=γ-1 ⇒degree of freedom is f=2γ−1Talk to our academic expert!
Similar Questions
Statement 1: It is necessary to define two molar heat capacities for a gas
Statement 2: Work is done by a gas when it volume changes.
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