Complete and balance the following reaction:
(i). `[MnO_4]^(2-)+H^(o+)to (ii). `SO_2 (aq)+Cr_2O_7^(2-)+2H^(o+)to

Explanation

To complete and balance the given reactions, we will follow a systematic approach for each reaction.

### Reaction (i):
**Given Reaction:**
\[ \text{MnO}_4^{2-} + \text{H}^+ \rightarrow \text{?} \]

**Step 1: Identify the oxidation states.**
- In \(\text{MnO}_4^{2-}\), manganese (Mn) has an oxidation state of +7.
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