Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 3 Chemical Reactions - Study Questions - Page 137c: 47


A and C

Work Step by Step

A) Changes in the oxidation number: $Zn/Zn^{2+}$: $Zn :0\rightarrow+2$ $NO_3^-/NO_2$: $N :+5\rightarrow+4$ B) No changes in oxidation numbers. C) Changes in the oxidation number: $Ca/Ca(OH)_2$: $Ca: 0\rightarrow+2$ $H_2O/H_2$: $H: +1\rightarrow0$
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