One variation on this equation is the Goldman-Hodgkin-Katz equation, which accounts for instances involving multiple ions and a non-equilibrium steady state.  A very intuitive derivation of this equation requires the use of Boltzmann factors and the probabilities of certain redox reactions.  However, it is most commonly presented in terms of entropy and Gibbs free energy.  FTP, identify this equation from electrochemistry which is named after a G
One variation on this equation is the Goldman-Hodgkin-Katz equation, which accounts for instances involving multiple ions and a non-equilibrium steady state.  A very intuitive derivation of this equation requires the use of Boltzmann factors and the probabilities of certain redox reactions.  However, it is most commonly presented in terms of entropy and Gibbs free energy.  FTP, identify this equation from electrochemistry which is named after a German scientist and which calculates a system's electric potential.
One variation on this equation is the Goldman-Hodgkin-Katz equation, which accounts for instances involving multiple ions and a non-equilibrium steady state.  
Nernst equation