3. The Types of Electrodes 1)Ametal in Equilibrium with its ions (Class I electrodes Ag+e←Ag (6r-6) E E RT n a (6-3) g 8 Ag Ag3.The Types of Electrodes 1) A metal in Equilibrium with its ions (Class Ⅰelectrodes) Ag+ + e￾Ag + = + + + F A g R T Ag Ag Ag E Ag E ln 0 (6r-6) (6-3)