Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 21 - Electrochemistry - 21.3 Electrolytic Cells - 21.3 Lesson Check: 21

Answer

Some applications of electrolysis in the field of metallurgy are plating, purifying and refining of metals. Metal plating is used to cover one metal with another, often for protection from corrosion or for the sake of attractiveness (such as in medals). Electrowinning is a method in which molten salts or aqueous solutions are reduced at the cathode to produce very pure metal samples. In electrorefining, impure samples are made at the anode, oxidized ot the cation, and reduced to the pure metal at the cathode.

Work Step by Step

Some applications of electrolysis in the field of metallurgy are plating, purifying and refining of metals. Metal plating is used to cover one metal with another, often for protection from corrosion or for the sake of attractiveness (such as in medals). Electrowinning is a method in which molten salts or aqueous solutions are reduced at the cathode to produce very pure metal samples. In electrorefining, impure samples are made at the anode, oxidized ot the cation, and reduced to the pure metal at the cathode.
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