ELECTROCHEMISTRY

Electrochemical Cells Electrochemical Cells
Galvanic Cells Galvanic Cells
Nernst Equation Nernst equation at 298 K for single electrode potential and cell potential, numerical problems to calculate half-cell and cell potentials (only for metal electrodes). Relationship between equilibrium constant and    , numerical problems. Relationship between standard Gibbs energy and ,numerical problems.
Conductance of Electrolytic Solutions Variation of conductivity and molar conductivity with concentration, graph for variation of m vs c for strong and weak electrolytes, limiting molar conductivities. Kohlrausch law and applications, numerical problems on calculation for weak electrolytes.
Electrolytic Cells and Electrolysis Electrolysis –Faraday’s laws of electrolysis (elementary idea), concept of nF required to discharge one mole of Mn+ ions, numerical problems on I law.
Batteries Types-difference, examples, Leclanche cell (dry cell) and Lead acid battery–anode, cathode, electrolyte, reactions at anode and cathode.
Fuel Cells Definition – examples, H2-O2 fuel cell – schematic diagram, anode, cathode, electrolyte, reactions at anode and cathode.
Corrosion Rusting of iron- anodic, cathodic reactions, composition of rust, methods of prevention.