Question

If Cp=20 Then Cv for diatomic gas will be?

Answer 1

From the given question the correct answer is:

the value of Cv for diatomic gas will be 14.28

Given:  

Cp=20

To find :

Cv=?

Concept used:

Calculate by using Cp/Cv=gamma

Solution:

An ideal diatomic gas (gamma = 7/5) undergoes a process in which its internal energy relates to the volume as U = alpha √ (V), where alpha is a constant.

for diatomic gas gamma value is 7/5

so the formula is:

Cp/Cv=gamma

Cv= cp×gamma

Now, put the values we will get:

Cv = 20×5/7= 14.28

Cv =14.28

so, the value of Cv for diatomic gas will be 14.28

Answer 2

Given:    

Cp=20

To find:

Cv=?

Concept used:  

Calculate by using Cp/Cv = gamma  

Solution:  

An ideal diatomic gas (  gamma = $\frac{7}{5}$  ) undergoes a process in which its internal energy relates to the volume as U = alpha √ (V), where alpha is a constant.  

for diatomic gas, gamma value is  $\frac{7}{5}$    

so the formula is:  

Cp/Cv=gamma  

Cv= cp×gamma  

Now, put the values we will get:

$Cv = 20*\frac{5}{7} = 14.28$

$Cv =14.28$

Hence, the value of Cv for diatomic gas will be $14.28$