Electrochemistry, Electrochemical Cells and Standard Hydrogen Electrodes

Lesson 1 of 5 • 46 upvotes • 10:02mins

Deepak James

Electrochemistry: Study of production of electricity from energy released during spontaneous chemical reaction and use of electrical energy Electrochemical cells: 1. Daniel cell Cell converts the chemical energy liberated during the redox reaction Zn+ Cu2+ -------> Zn2+ + Cu Its electrode potential equals to 1.1 v 2, Galvonic cells A galvonic cells is an electrochemical cell that converts the chemical energy of spontaneous redox reaction into electrical energy Half reduction occurs on oxidation and reduction cells it's called half cells Standard hydrogen electrode The standard hydrogen electrode consists of platinum electrode coated with platinum black. The electrode is dipped in an acid solution and pure hydrogen gas is bubbled. The concentration of both the reduced and oxidised forms of hydrogen