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Electrochemical Cell - Chemistry And Electricity, Voltaic Cells, Electrolytic Cells

chemical reaction electrons reduction

Electrochemical cells are devices based on the principle that when a chemical oxidation-reduction reaction takes place, electrons are being transferred from one chemical species to another. In one type of electrochemical cell called a voltaic or galvanic cell, these electrons are deliberately taken outside the cell and made to flow through an electric circuit to operate some kind of electrical device. A flashlight battery is an example of a voltaic electrochemical cell.

In the other type of electrochemical cell, called an electrolytic cell, the reverse process is taking place: electrons in the form of an electric current are deliberately being pumped through the chemicals in the cell in order to force an oxidation-reduction reaction to take place. An example of an electrolytic cell is the setup that is used to decompose water into hydrogen and oxygen by electrolysis.

Thus, a voltaic cell produces electricity from a chemical reaction, while an electrolytic cell produces a chemical reaction from electricity. Voltaic and electrolytic cells are considered separately below, following a general discussion of the relationship between chemistry and electricity.

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about 4 years ago

this information is not enough .this is just an introduction .please work for more authentic and thorough material .everybody consults from internet only to find extra and explained information .this kind of points are also present in every textbook