Question
Calculate the degrees of freedom for monoatomic, diatomic and triatomic gas
Solution
D.O.F can be easily calculated using this equation
D. O. F=3N
Where N represents no. Of molecules
Mono atomic (N =1)
D.O.F=3 +0+0
It has only 3 translation
So Mono atomic gas molecule has 3 D. O. F
Diatomic (N=2)
D. O. F=3+2+1
It has 3 translation, 2 rotation and 1 vibration
So Diatomic gas molecule has 6 D. O. F
Triatomic (N=3)
D. O. F=3+3+(3N-6)
It has 3 translation, 3 rotation and 3 vibration
So Triatomic gas molecule has 9 D. O. F
