Fundamental physical and chemical conceptions, Older Electrochemical views, The laws of Avogadro and van't hoff, Vapour pressure of solutions, Boiling point and freezing point of solutions, General conditions of Equilibrium, Velocity of reaction, Electrolytes. Electrolytic dissociation, Conductivity of Electrolytes, Degree of Dissociation and dissociation constant, Conclusion, Equilibrium between several electrolytes, Calculation of electromotive forces, Potential differene between two bodies, Oxidation and reduction elements, secondary elements, Development of heat by the electric current,