Complete the following equations :
(i) `(NH_4)_2 S_2 O_8 + H_2 O + MnSO_4 rarr …..+ …..+ ….`
(ii) `S + H_2 SO_4(conc,) overset (Heat)rarr …..+ H_2 O`
(iii) `I_2 + SO_2 + H_2 O rarr SO_4^(2-) + …..+ H^(oplus)`
(iv) `I_2 + O_3 + H_2 O rarr HIO_3 + .....`
(v) `Cr_2 O_7^(2-) + H^(oplus) + SO_2 rarr SO_2^(2-) + H_2 O + .....`
(vi) `H_2 S + HNO_3 rarr .... + H_2 O + S`.

Explanation

Let's complete the equations step by step:

### (i) \( (NH_4)_2 S_2 O_8 + H_2 O + MnSO_4 \rightarrow \)
1. **Identify the reactants**: We have ammonium persulfate \((NH_4)_2S_2O_8\), water \(H_2O\), and manganese(II) sulfate \(MnSO_4\).
2. **Determine the products**: The reaction will produce ammonium sulfate \((NH_4)_2SO_4\), manganese dioxide \(MnO_2\), and sulfuric acid \(H_2SO_4\).
3. **Write the balanced equation**:
\[
(NH_4)_2S_2O_8 + H_2O + MnSO_4 \rightarrow (NH_4)_2SO_4 + MnO_2 + H_2SO_4
...