Specific heat capacity, simply called as specific heat, is the measure of heat energy required to increase temperature of a unit amount of substance by certain temperature.
Specific heat capacity, Q = mc∆T molar heat capacity, Q = nc∆T
Factors affecting specific heat:
At constant volume and pressure:
Specific heat at constant volume is denoted by Cv and at constant pressure by Cp.
Cv = ∆U/∆T
Cp = ∆H/∆T
Cp – Cv = R
Specific heats of different types of gases:
Mono atomic gases:
Cv = 1.5R
Cp = 2.5R
Diatomic without vibration:
Cv = 2.5R
Cp = 3.5R
Diatomic with vibration:
Cv = 3.5R
Cp = 4.5R
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