Explore Formula of Calculated Electrode Potential with Thermodynamics Method

For the error of two calculated electrode potential formula and φθ=[∑νBΔfGθm(B)]/(nF) and Eθ3=n1Eθ1+n2Eθ2n3 with thermodynamics method in teaching material,the two formulas were derived in detail by examples.Explained formula φθ=[∑νBΔfGθm(B)]/(nF) calculated the standard electrode potential only for half-reaction of loss electronic,and added formula φθ=ΔrGθm(half-reaction of get electron)nF=∑νBΔfGθm(B)](nF) calculated the standard electrode potential for the half-reaction of get electron.When denotes the electromotive force and φ express electrode potential,the formula was φθ3=n1φθ1+n2φθ2n3 that was calculated electrode potential of the other electrode by the electrical potential of some electrodes of the same elements.