Chemistry (12th Edition)

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

Chapter 20 - Oxidation-Reduction Reactions - 20 Assessment: 76

Answer

+5 -3 +3 +3 +1

Work Step by Step

Recall the oxidation number of oxygen is always 2-. The oxidation number of Hydrogen is usually 1+. Therefore, Nitrogen's oxidation number must be +5. The oxidation number of Hydrogen is usually 1+, unless in metal hydrides. Therefore, Nitrogen's oxidation number must be -3 , as the sum of all oxidation numbers must be equal to 0. Recall the oxidation number of oxygen is always 2-. The oxidation number of Hydrogen is usually 1+. Therefore, Nitrogen's oxidation number must be +3, because the sum of all oxidation numbers in a compound must be equal to 0. Recall the oxidation number of oxygen is always 2-. Therefore, Nitrogen's oxidation number must be +3. because the charge of ion is -1. Recall the oxidation number of oxygen is always 2-. Therefore, Nitrogen's oxidation number must be +1 because the sum of the oxidation numbers must be 0.
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