Chemistry (12th Edition)

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

Chapter 21 - Electrochemistry - 21 Assessment: 30

Answer

In a redox reaction, two processes happen simultaneously: reduction and oxidation. In order to better understand the transfer of electrons in a redox reaction, we often reparate the reduction reaction from the oxidation reaction and write them separately in what is known as "half-reactions." Each half-reaction is actually a reaction, and a component of a larger redox reaction. Half-reactions are made when we look at the change in oxidation states of a single substance in a redox reaction. Half-reactions are also used to balance redox reactions and quantify the number of electrons that move in a redox reaction.

Work Step by Step

In a redox reaction, two processes happen simultaneously: reduction and oxidation. In order to better understand the transfer of electrons in a redox reaction, we often reparate the reduction reaction from the oxidation reaction and write them separately in what is known as "half-reactions." Each half-reaction is actually a reaction, and a component of a larger redox reaction. Half-reactions are made when we look at the change in oxidation states of a single substance in a redox reaction. Half-reactions are also used to balance redox reactions and quantify the number of electrons that move in a redox reaction.
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