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Redox (Oxidation-Reduction) Reactions

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Balance the following equations by the half-cell method. Show both half-cell reactions and identify them as oxidation or reduction.

a) SO32- + MnO4- + H+ --> Mn2+ + SO42- + H2O(l)

b) Cl2(g) + OH- --> Cl- + ClO3- + H2O(l)

c) SO42- + I- + H+ --> S2- + I2(s) + H2O(l)

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The solution provides balancing redox reactions using the half-cell method.

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Balance the following equations by the half-cell method. Show both half-cell reactions and identify them as oxidation or reduction.

a) SO32- + MnO4- + H+ --> Mn2+ + SO42- + H2O(l)

Oxidation reaction:
SO32- + H2O --> SO42- + 2H+ + 2e-

Reduction reaction:
MnO4- + 8H+ + 5e- ...

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