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In this essay I would like to tell you about electrolysis, what its used for, where its used, the laws of electrolysis, how ores are extracted, electroplating of metals and a brief history on Electrolysis such as who discovered it and when.

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Introduction

Electrolysis Ricky Davies 10D Introduction In this essay I would like to tell you about electrolysis, what its used for, where its used, the laws of electrolysis, how ores are extracted, electroplating of metals and a brief history on Electrolysis such as who discovered it and when. So read on I hope you enjoy! What is Electrolysis? Electrolysis can be defined as; if the salt copper sulfate is dissolved in water, it dissociates into positive copper ions and negative sulfate ions. When a potential difference is applied to the electrodes, the copper ions move to the negative electrode, are discharged, and are deposited on the electrode as metallic copper. The sulfate ions, when discharged at the positive electrode, are unstable and combine with the water of the solution to form sulfuric acid and oxygen. Such decomposition caused by an electric current is called electrolysis. Electrolysis can also be explained as the process by which electric current is passed through a substance to effect a chemical change. ...read more.

Middle

What is Electrolysis used for? Electrolytic decomposition is the basis for a number of important extractive and manufacturing processes in modern industry. Caustic soda, an important chemical in the manufacture of paper, rayon, and photographic film, is produced by the electrolysis of a solution of common salt in water. The reaction produces chlorine and sodium. The sodium in turn reacts with the water in the cell to yield caustic soda. The chlorine evolved is used in pulp and paper manufacture. An important industrial use of electrolysis is in the electrolytic furnace, which is employed in the manufacture of aluminum, magnesium, and sodium. In this furnace the resistance of a charge of metallic salts is used to heat the charge until it becomes molten and ionizes. The metal is then deposited electronically. Electroplating of Metals Electroplating of metals is used to purify the metals as metal atoms from the anode are plated out on the cathode. ...read more.

Conclusion

The time, current, and concentration of the Chromium bath is controlled scientifically by using the Laws of Electrolysis which established the stoichiometry of electrolysis. Extracting The most powerful way of extracting a metal from its ore is by using Electrolysis. But this is very expensive; this is probably the best way that we have come across so far. An important point in electrolysis is that Oxidation and Reduction take place but they can't work with out each other (or can't take place). Conclusion In the conclusion I am going to tell you what I have learned by doing this essay. First of all I have learned what Electrolysis is, what it does and why we need to do it another main thing I learned about is Michael Faraday who discovered electrolysis in his early years as a scientist and went on to discover the electric generator. I have also learned about electroplating and why we need to purify the metals and why we electrogalvanize and so on. I hope you have enjoyed my essay! 4 1 By Ricky Davies 10D 1 ...read more.

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