Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 4 - Sections 4.1-4.9 - Exercises - Problems by Topic - Page 189: 96a

Answer

This is a redox reaction. Al acts as a reducing agent, Ag acts as an oxidizing agent.

Work Step by Step

In a redox reaction, there is a change in oxidation number. Al's oxidation number changes from 0 to +3. There is an increase in oxidation number so it gets oxidised. Hence, its a reducing agent. Ag+ oxidation number changes from +1 to 0; there is a decrease in its oxidation number, it gets reduced. Hence, it acts as an oxidizing agent.
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