Example #6 Balance the following redox reaction which occurs in a basic solution: SO₂2- + MnO → SO² + MnO₂ Which half-reaction is reduction? Which is oxidation?
Example #6 Balance the following redox reaction which occurs in a basic solution: SO₂2- + MnO → SO² + MnO₂ Which half-reaction is reduction? Which is oxidation?
Chapter18: Introduction To Electrochemistry
Section: Chapter Questions
Problem 18.11QAP
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Transcribed Image Text:Type in each of the following equations as it is shown in the text box using ChemType. Subscripts need
to be subscripts and superscripts need to be superscripts. Chemical arrows must be used. You should
have written fourteen equations when you are done.
BALANCING REDOX REACTIONS
Example #6
Balance the following redox reaction which occurs in
a basic solution:
SO3²- + MnO4 → SO₂²- + MnO₂
Which half-reaction is reduction? Which is oxidation?
Separate into two
skeleton half
equations
SO3²- → SO₂2-
F3
MnO → MnO₂
MnO → MnO₂ + 2H₂O
4
4H+ + MnO₂ → MnO₂ + 2H₂O
MnO4 → MnO₂ 4H+ + MnO + 4OH → MnO₂ + 2H₂O + 40H-
4H₂O + MnO₂ →
MnO₂ + 2H₂O + 40H-
MnO₂ + 2H₂O + 40H-
4
20
F4
%
5
2OH- + SO3²- + H₂O → SO2 + 2H+ + 2OH-
2OH- + SO3²- + H₂O → SO2 + 2H₂O
20H-+SO3²- + H₂O → SO2 + 2H₂O + 2e-
4H₂O + MnO4 + 3e
21
O Search
SO3² + H₂O → SO₂²-
2-
SO3 + H₂O → SO2 + 2H+
F5
A
6
F6
&
7
▶ ||
F7
★
8
WHICLE
F8
9
F9
0
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