Thursday, August 26, 2010

Enthalpy(Definition, Equation), Change in Enthalpy Calculations

Enthalpy(Definition, Equation)

Enthalpy is defined as the internal energy 'U' plus product of Pressure and Volume

H = U + PV

Change in Enthalpy is give by the following Equation

dH = dU + PdV + VdP

But dU = TdS - PdV

So  dH = TdS - PdV +  PdV + VdP

dH = TdS  + VdP

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