Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 20 - Electrochemistry - Exercises - Page 901: 20.25d


$As_{2}O_{3} (s) + 2NO_{3}^{-} (aq) + 2H_{2}O (l) + 2H^{+} (aq) → 2H_{3}AsO_{4} (aq) + N_{2}O_{3} (aq)$ Oxidizing Agent: $NO_{3}^{-}$ Reducing Agent: $As_{2}O_{3}$

Work Step by Step

We add water and H+ on left hand side to balance the equation as it is in acidic medium. Oxidation state of As is changed from +3 to +5, hence it is oxidized and state of N is changed from +5 to +3, hence it is reduced.
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