Electro-chemistry - QS Study
QS Study

The Polarograph

The Polarograph The potential at which the deposition of metal ions on the cathode starts is known as the deposition potential or discharge potential. The......

Overvoltage

Overvoltage The cell reaction can be reversed when we apply the opposing emf. Usually the opposing voltage required to reverse the cell reaction is much......

Polarization

Polarization During the electrolysis process, the product of the electrolysis on reaching the electrodes set up an emf opposite to the applies emf. The phenomenon......

Fuel Cell

Fuel Cell At present fossil fuel is the primary source of energy to meet our requirements. But the conversion of fossil fuel either to electrical......

Leclanche’s Dry Cell

Leclanche’s dry cell is used as flash light battery and in the operation of transistorized equipments. In these cells a carbon rod acting as an......

Lead Storage Cell

Lead storage cell is a kind of Galvanic cell which is extensively used as portable sources of electrical energy in automobiles, diesel generators etc. It......

Liquid Junction Potential: Salt Bridge

Liquid Junction Potential: Salt Bridge If in a cell two electrolytic solutions or two solutions of the same electrolyte but of different concentrations, are in......

Types of Galvanic Cell

Types of Galvanic Cell In a typical electrochemical cell the cell potential is a direct consequence of the net chemical reaction. There may be another......

Glass Electrode: the pH Meter

Glass electrode: the pH meter At the present time in most applications pH is measured with the help of a glass electrode coupled with a......

Determination of pH of a Solution

Determination of pH of a Solution The change of potential with change in concentration of ions has been used in chemistry in many ways. Like......

Determination of Standard Electrode Potential (SEP)

Determination of Standard Electrode Potential (SEP) For measuring the standard potential of an electrode (which is referred to as test electrode) the test electrode is......

Electrochemical Cells: Notations and Sign Convention

Electrochemical Cells: Notations and Sign Convention An electrochemical cell may be prepared by combining any two half-cells. Such cells and half-cells are conveniently described by......