Difference between galvanic cell and electrolytic cell pdf

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difference between galvanic cell and electrolytic cell pdf

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An electrolytic cell uses electrical energy to drive a non-spontaneous redox reaction. An electrolytic cell is a kind of electrochemical cell. It is often used to decompose chemical compounds, in a process called electrolysis —the Greek word lysis means to break up.

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In Grade 11, you carried out an experiment to see what happens when zinc granules are added to a solution of copper II sulfate. Figure As discussed in Grade 11, the half-reactions are as follows:. Remember that there was an increase in the temperature of the reaction when you carried out this experiment it was exothermic. An exothermic reaction releases energy. This raises a few questions:.

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There are two types of electrochemical cells: galvanic cells — with spontaneous redox processes that allow continuous flow of electrons through the conductor, whereby the chemical energy is transformed into an electrical one; and electrolytic, where the redox reactions are influenced by an external source of current, where the electricity is converted in chemical energy. Galvanic cells are systems in which the chemical energy is transformed into electrical and as a result current is generated. In galvanic cells, direct current is generated as a result of the redox oxidation-reduction process. The galvanic element consists of two half-cells. The half-cell consist of the electrolyte and the immersed electrode in it. Between these half-cells a contact must be provided, connecting the electrolyte with a salt bridge or semi-conductive membrane and connecting the electrode with conductor.

Electrical Academia. A galvanic cell is the one in which an oxidation-reduction chemical reaction occurs spontaneously to generate electrical energy. Chemical energy is converted into electrical energy. An electrolytic cell is the one in which electrolysis process takes place, a chemical compound is disintegrated by passing electricity through it. The chemical reaction taking place is not self-generated spontaneous , it is forced by employing a voltage.


A galvanic cell is an electrochemical cell in which spontaneous redox processes occur allowing the continuous flow of electrons through the conductor, whereas.


Electrochemical cell

In Grade 11, you carried out an experiment to see what happens when zinc granules are added to a solution of copper II sulfate. Figure As discussed in Grade 11, the half-reactions are as follows:. Remember that there was an increase in the temperature of the reaction when you carried out this experiment it was exothermic.

Home About us Privacy policy Contact Us. Using a spontaneous chemical reaction to generate electricity. Using electricity to carry out non-spontaneous reactions that can't occur by themselves. Facebook Twitter.

Electrochemistry: The study of production of electricity from energy released during spontaneous chemical reactions, and the use of electrical energy to bring about non-spontaneous chemical transformations is called electrochemistry. Electrochemical Cell: A device which can use chemical energy to generate electrical energy, or can use electrical energy to cause chemical reaction is called electrochemical cell. There are two types of electrochemical cell, viz. Galvanic Cell: The electrochemical cell which uses chemical energy to produce electrical energy is called galvanic cell or voltaic cell, e. Daniell Cell.

Similarities and Differences Galvanic and Electrolytic Cell:

An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions. The electrochemical cells which generate an electric current are called voltaic cells or galvanic cells and those that generate chemical reactions, via electrolysis for example, are called electrolytic cells. A battery consists of one or more cells, connected in parallel, series or series-and-parallel pattern. An electrolytic cell is an electrochemical cell that drives a non-spontaneous redox reaction through the application of electrical energy.

These cells are important because they are the basis for the batteries that fuel modern society. But they aren't the only kind of electrochemical cell. The reverse reaction in each case is non-spontaneous and requires electrical energy to occur.


A galvanic cell is the one in which an oxidation-reduction chemical reaction occurs spontaneously to generate electrical energy. Chemical energy is converted.


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  • The main points of difference between an electrolytic cell and a galvanic cell electrochemical cell are:. Ray B. - 04.05.2021 at 02:29

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