Specific Heat Capacity for polyatomic gases
- Polyatomic gases will have 3 translational degree of freedom, 3 rotational degrees of freedom and ‘f’ number of vibrational modes.
- Total internal energy of 1 mole of gas =(3x(1/2)kBT + 3x(1/2)kBT+ fkBT)x NA
((3/2) + (3/2) +f)RT = (3+f) RT.
- CV=dU/dT = (3+f)R
- γ= CP/CV = (4+f)/(3+f)