Autocatalysis (Oxidation of iodide ions by hydrogen peroxide in an acidic solution)-01

Overall reaction: 
\( \text{2 I}^- + \text{H}_2\text{O}_2 + 2 \text{H}^+ \rightarrow \text{I}_2 + 2 \text{H}_2\text{O} \)

Mechanism

Step 01: Formation of Iodine (I₂)
\( \text{I}^- + \text{H}_2\text{O}_2 + 2 \text{H}^+ \rightarrow \text{I}_2 + 2 \text{H}_2\text{O} \) (slow)

Step 02: Catalytic Formation of Iodine
 \( \text{I}_2 + \text{H}_2\text{O}_2 \rightarrow \text{2 I}^- + \text{2 H}^+ \) (fast)

Rate Law:
\( \text{Rate} = k[\text{I}^-][\text{H}_2\text{O}_2] \)