Chemistry: The Central Science (13th Edition)

by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.

Published by Prentice Hall

ISBN 10: 0321910419

ISBN 13: 978-0-32191-041-7

Chapter 4 - Reactions in Aqueous Solution - Exercises - Page 159: 4.49b

Answer

Work Step by Step

COCl2. Oxygen is -2 and since we have Cl-, the oxidation number is the same as the charge on the ion, which is -1 for Cl. Since we have 2 of them then we have -2. So far we have -2 (from Oxygen) - 2 (from the two Cl-). The sum of all the oxidation numbers must be 0 since the molecule is uncharged so we have: x -2 -2 = 0 x = +4

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