Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 4 - Reactions in Aqueous Solutions - Questions & Problems: 4.132

Answer

Please see the work below.

Work Step by Step

We know that in a redox reaction, the oxidizing agent gains one or more electrons. Hence, the oxidation number of the element gaining the electrons should become more negative. In the case of chlorine, the -1 oxidation number is already the most negative stage possible, for the chloride ion cannot accept any more electrons. Hence, hydrochloric acid is not an oxidizing agent.
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