# Enthalpy of reaction as function of the equilibrium constant kp

1. Feb 1, 2010

### kthouz

Hello!
Can someone just guide me? I was calculating thermodynamic functions of some ions and a classmate showed me an equation of enthalpy as function of reduced Gibbs energu and equilibrium constant.
$$\Delta$$H=T[$$\Delta$$$$\Phi$$-RlnK]
where $$\Delta$$H is the enthalpy of reaction at 0C, T is the temperature, $$\Delta$$$$\Phi$$ is the reduced gibbs energy, R is the ideal gas constant and K is the equilibrium constant.
Does anyone know a book or a link where i can refer or just help me to derive that equation?