Calculate the n- factor of reactants in the given chemical changes?
(b ) `C_(2)O_(4)^(2-)rarrCO_(2)`

Explanation

To calculate the n-factor of the reactant \( C_2O_4^{2-} \) in the given chemical change where it converts to \( CO_2 \), we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactant and Product:**
The reactant is \( C_2O_4^{2-} \) (oxalate ion) and the product is \( CO_2 \) (carbon dioxide).

2. **Determine the Oxidation States:**
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