Chemistry - Topic taught 20 April
Electrochemistry is the branch of chemistry which deals with the relationship between electrical energy and chemical energy and inter-conversion of one form into another. 2. An electrochemical cell consists of two metallic electrodes dipped in electrolytic solutions. The cells are of two types: (a) Electrolytic cells (b) Galvanic cells 3. A galvanic cell consists of two half cells. Each half cell contains an electrolytic solution and a metallic electrode.The electrode at which- oxidation takes place is called an anode and the electrode at which reduction takes place is called the cathode. The half-cells are separated from each other by means of a porous pot or a salt bridge. What is Salt Bridge? A salt bridge is a device used in an electrochemical cell for connecting its oxidation and reduction half cells wherein a weak electrolyte is used. In other words, a salt bridge is a junction that connects the anodic and cathodic compartments in a cell or electrolytic solution....
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