First, we need to write the unbalanced half-reactions for the given reaction:
Oxidation half-reaction: $\text{Co}^{2+} \rightarrow \text{Co}^{3+}$
Reduction half-reaction: $\text{H}_2\text{O}_2 \rightarrow \text{H}_2\text{O}$
Now, we need to balance the
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