Question

Pressure and temperature graph of an ideal diatomic gas is shown to be inversely proportional to each other. The molar heat capacity of the gas in terms of R is

Answer 1

Answer:

Pressure and temperature graph of an ideal diatomic gas is shown to be inversely proportional to each other. The molar heat capacity of the gas in terms of R is Resistance.

Answer 2

Explanation:

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11th

Chemistry

Thermodynamics

Enthalpy

The pressure P of an ideal ...

CHEMISTRY

The pressure P of an ideal diatomic gas varies with its absolute temperature T as shown in figure. The molar heat capacity of gas during this process is [R is gas constant]

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December 26, 2019

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Soumar Gayen

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Solution:- (C) 2.5R

From the graph,

Volume is constant.

As we know that molar heat capacity of gas,

C=

dT

dU

.....(1)

As U=fRT

whereas f is the degree of freedom

⇒dU=C

v

dT=

2

5

RdT(∵the gas is diatomic)

Now, from eq

n

(1), we have

C=

2dT

5RdT

⇒C=

2

5

R=2.5R

Hence the molar heat capacity of the gas is 2.5R.