30ml of hydrogen peroxide solution was added with excess potasium iodide. The iodide liberated was titrated using starch indicator with 20ml of 0.3N sodium thiosulphate solution.Calculate the normality of hydrogen peroxide solution.

Explanation

To calculate the normality of the hydrogen peroxide solution, we will use the formula for titration in iodometry, which is given by:

\[ N_1 V_1 = N_2 V_2 \]

Where:
- \( N_1 \) = Normality of the hydrogen peroxide solution (unknown)
- \( V_1 \) = Volume of the hydrogen peroxide solution = 30 mL
- \( N_2 \) = Normality of sodium thiosulphate solution = 0.3 N
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