In the redox reaction `2MnO_4^(-) + 5C_2 O
The ion acting as autocatalyst is:

Options

A. `MnO_3`
B. `C_2O_4^(2-)`
C. `H^(+)`
D. `Mn^(2+)`

Explanation

To determine the ion acting as an autocatalyst in the given redox reaction, we need to analyze the reaction and identify which product can act as a catalyst.

### Step-by-Step Solution:

1. **Write the Balanced Reaction:**
The given redox reaction is:
\[
2MnO_4^{-} + 5C_2O_4^{2-} + 16H^{+} \rightarrow 2Mn^{2+} + 10CO_2 + 8H_2O
...