FOUND.OF COLLEGE CHEMISTRY
FOUND.OF COLLEGE CHEMISTRY
15th Edition
ISBN: 9781119234555
Author: Hein
Publisher: WILEY
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Chapter 17, Problem 51CE
Interpretation Introduction

Interpretation:

Balanced equation of reaction below if concentration of hydroxide ion is 3.4×1010 M has to be determined.

  Fe2+(aq)+MnO4(aq)Fe3+(aq)+Mn2+(aq)

Concept Introduction:

Rules to balance redox reactions by ion-electron method are as follows:

1. Two half-reactions with elements that got oxidized and reduced should be written.

2. Elements other than oxygen and hydrogen should be balanced.

3. Conditions to balance O and H are as follows:

In acidic solution, H+ and H2O should be used to balance O and H.

In basic solution, equal OH ions to H+ ions should be added on both sides of balanced reaction in acidic medium.

4. For acidic medium, charge is balanced by addition of H+ ion. Then combine H+ and OH to form H2O and cancel common H2O in reaction.

5. Electrons should be added to balance electric charge.

6. Finally, two half-reactions should be added and any common substance including electrons must be cancelled.

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Chapter 17 Solutions

FOUND.OF COLLEGE CHEMISTRY

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