Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 140CP
Related questions
Question
I.
SO3−2 (aq) + MnO−4(aq) → SO4−2(aq) + Mn2+(aq)
Expert Solution
Step 1
To balance the redox reactions in acidic medium, consider both the oxidation and reduction half cell reactions.
1) Add H+ ions to balance hydrogen atoms.
2) To balance O-atoms , add H2O molecules.
3) To balance the charge add electrons.
Step 2
Given unbalanced chemical equation is:
SO3−2 (aq) + MnO4 −(aq) → SO4−2(aq) + Mn2+(aq)
Oxidation half reaction is:
Step 3
Reduction half reaction is:
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