Answer
A redox reaction
Work Step by Step
Oxidizing agent: Oxygen
Reducing agent: Chromium
Cr is oxidized by Oxygen to $Cr^{3+}$ ions and oxygen in reduced by Cr to form $O^{2-}$ ions.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 3 - Chemical Reactions - Conceptual Exercise 3.12 - Oxidation-Reduction Reactions - Page 117: b
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