I know the relation between specific heat at constant volume and pressure and I also know how to calculate it.
Thing is, I don't understand its concept
I want to know why at constant pressure, specific heat is always greater than at constant volume
Thermodynamics – Why Specific Heat at Constant Pressure is Greater Than Specific Heat at Constant Volume
thermodynamics
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Best Answer
At constant volume, all the heat that goes into the system goes into raising the temperature of the system, and no external work is done.
At constant pressure, some of the heat goes into expanding the system, which does external work, and therefore leaves less energy available for raising the temperature.