Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 20 - Oxidation-Reduction Reactions - 20 Assessment: 53

Answer

MnO2 + 4 HCL -> MnCl2 + Cl2 + 2 H2O

Work Step by Step

Take the original equation and assign oxidation numbers to each of the reacting species in the chemical equation. Determine which element is reduced and oxidized in the reaction. Use coefficients to adjust the number of reactants and products so the total increase in oxidation number is equal to the total decrease in oxidation number.
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