Chemistry: Principles and Practice (3rd Edition)

Published by Cengage Learning
ISBN 10: 0534420125
ISBN 13: 978-0-53442-012-3

Chapter 3 - Equations, the Mole, and Chemical Formulas - Questions and Exercises - Exercises - Page 132: 3.46

Answer

$4Fe (s) + 3O_{2} (g) → 2Fe_{2}O_{3}$ Oxidation numbers in reactants: Fe = 0, O2 = 0 Oxidation number in products: Fe = +3, O = -2 From above, we observe that oxygen is reduced (0 to -2), and Iron is oxidized (0 to +3)

Work Step by Step

$4Fe (s) + 3O_{2} (g) → 2Fe_{2}O_{3}$ Oxidation numbers in reactants: Fe = 0, O2 = 0 Oxidation number in products: Fe = +3, O = -2 From above, we observe that oxygen is reduced (0 to -2), and Iron is oxidized (0 to +3)
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