General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 4 - Chemical Reactions - Questions and Problems - Page 172: 4.61

Answer

Please see the work below.

Work Step by Step

We know that Phosphorus changes from an oxidation number of zero in $P_4$ to $+5$ in $P_4O_{10}$ while losing electrons and acting as a reducing agent. Cobalt changes from an oxidation number of zero in to +2.
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