Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 20 - Electrochemistry - Exercises - Page 901: 20.23e

Answer

$4OH^{-} (aq) → 2O_{2} (g) + 2H_{2}O + 4e^{-}$ This is an oxidation reaction

Work Step by Step

We add water on the right hand side to balance the equation. Since Oxygen is going from oxidation state of -1 to 0, this is an oxidation reaction.
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