Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 7 - Section 7.8 - Energy in Chemical Reactions - Additional Questions and Problems - Page 249: 7.95b

Answer

This is an oxidation reaction.

Work Step by Step

1. In the equation, the electrons are on the products side: oxidation. 2. The charge of the Al is going from $0$ to $+3$. It is increasing: oxidation. 3. The $Al^{0}$ is losing electrons during the reaction: oxidation.
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