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A definite volume of H2O2 undergoing dec...

A definite volume of `H_2O_2` undergoing decomposition required 22.8 mL of standard KMn`O_4` solution for titration. After 10 and 20 min, the volume of permanganate required were 13.8 and 8.25 mL respectively. Find out the order of the reaction.

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