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 The energy associated with the moving charges is called current electricity. |
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Electrolysis is the process of decomposition of an electrolyte as a result of passage of electricity to its molten state or aqueous solution. |
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In an electro-chemical cells (voltaic cell) chemical energy is converted into electrical energy. |
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Oxidation and reduction are complimentary processes and always occur simultaneously in an electrochemical cell. |
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Chemical process involving oxidation and reduction is called redox reaction. |
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A redox reaction involves transference of electrons from reducing agents to oxidizing agents. |
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Passage of electricity through a metal or graphite is different from passage of electricity through aqueous solution of electrolyte in that during the process the metal does not decompose but the electrolyte decomposes. |
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The ions that are lower in the electrochemical series get discharged in preference to the ones above them. |
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During electrolysis the metals and hydrogen are set free at the cathode and they are said to be electropositive. Non-metals are set free at the anode and are said to be electronegative. |
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Oxidation number is a residual charge, which an atom of the element appears to have when other atoms from the molecule are removed as ions by counting the electrons with more electronegative element. |
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