When 25 " mL of " an aqueous solution of `H_2O_2` is titrated with an excess of KI solution in dilute `H_2SO_4`, the liberated `I_2` required 20 " mL of " 0.3 N`Na_2S_2O_3` solution for complete reaction.volume strength of `H_2O_2` solution.

Explanation

To find the volume strength of the hydrogen peroxide (H₂O₂) solution, we will follow these steps:

### Step 1: Understanding the Reaction
When H₂O₂ is titrated with KI in the presence of dilute H₂SO₄, iodine (I₂) is liberated. The reaction can be represented as:
\[ 2 \text{KI} + \text{H}_2\text{O}_2 \rightarrow \text{I}_2 + 2 \text{KOH} \]

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