Question

for ideal polyatomic gas molar specific heat=? explain it plz​

Answer 1

Answer:

The molecules of a monatomic gas have 3 degrees of freedom.

The average energy of a molecule at temperature T is

2

3K

B

T

.

The total internal energy of a mole is:

2

3K

B

T

×N

A

.

The molar specific heat at constant volume C

v

is

For an ideal gas,

C

v

(monatomicgas)=

dT

dU

=

2

3RT

FOr an ideal gas, C

p

−C

v

=R

where C

p

is molar specific heat at constant pressure.

Thus, C

p

=

2

5R