Chemistry (12th Edition)

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

Chapter 21 - Electrochemistry - 21 Assessment - Page 754: 27


See explanation

Work Step by Step

Because aluminum is more active than copper, aluminum is more readily oxidized and a reaction spontaneously occurs. We should notice that the number of electrons transferred in the half-reactions is not the same and cannot cancel each other, so we multiply the oxidation half-reaction by 2 and the reduction reaction by 3.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.