Question

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is ​

Answer 1

Answer:

Total heat energy supplied to raise temperature of a diatomic gas at constant pressure=nC

p

ΔT

Total rise in internal energy=nC

v

ΔT

Thus fraction of heat energy utilized in increasing internal energy=

nC

p

ΔT

nC

v

ΔT

=

C

p

C

v

=

2

f

+1

2

f

=

f+2

f

where f is the number of degrees of freedom of the gas.

For diatomic gas, f=5

Thus fraction=

7

5

Explanation:

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