Home Chemistry Electrochemistry

Electrochemistry

Redox reactions, conductance in electrolytic solutions, specific and molar conductivity, variations of conductivity with concentration, Kohlrausch's Law, electrolysis and law of electrolysis (elementary idea), dry cell -electrolytic cells and Galvanic cells, lead accumulator, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells, Relation between Gibbs energy change and emf of a cell, fuel cells, corrosion.

chemistry 12th class cbse notes

Electrochemical cell and Gibbs Energy of the Reaction

Electrochemical cell and Gibbs Energy of the Reaction Electrical work done in one second is equal to electrical potential multiplied by total charge passed. If...
chemistry 12th class cbse notes

Nernst Equation

Nernst Equation It relates electrode potential with the concentration of ions. Thus, the reduction potential increases with the increase in the concentration of ions. For...
chemistry 12th class cbse notes

Kohlrausch’s Law

Kohlrausch’s Law It states that the limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion...
chemistry 12th class cbse notes

Conductance, Conductivity, Molar & Equivalent Conductivity

Conductance (G) It is the reciprocal of resistance and may be defined as the ease with which the electric current flows through a conductor. SI unit...
chemistry 12th class cbse notes

Corrosion

Corrosion It involves a redox reaction and formation of an electrochemical cell on the surface of iron or any other metal. At one location oxidation...
chemistry 12th class cbse notes

Fuel Cells

Fuel Cells A fuel cell differs from an ordinary battery in the sense that the reactants are not contained inside the cell but are externally...
chemistry 12th class cbse notes

Batteries

Batteries: When Galvanic cells are connected in series to obtain a higher voltage the arrangement is called Battery. Primary Batteries: Primary cells are those which can be...
chemistry 12th class cbse notes

Quantitative Aspects of Electrolysis

Michael Faraday was the first scientist who described the quantitative aspects of electrolysis. Faraday published his results during 1833-34 in the form of the...
chemistry 12th class cbse notes

Electrochemistry, Electrochemical Cells and Types

Electrochemistry Electrochemistry is the study of the production of electricity from the energy released during a spontaneous chemical reaction and the use of electrical energy...