Question

Derive an expression for the specific heat capacity of solid in terms of universal gas constant.

Answer 1

Answer:

The molar specific heats of a gas having f degrees of freedom is given by :

C

v

=

2

1

fR

and C

p

=C

v

+R [From 1

st

law of thermodynamic ]

C

p

=(

2

f

+1)R

2

(f+2)

R.

Thus ratio, r=

C

v

C

p

=

2

(f+2)R

×

ffR

2

=

f

f+2