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Derive order of reaction for the decomposition of H2O2 from the following data.

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Derive order of reaction for the decomposition of H2O2 from the following data. 

Time in minutes 0 10 20 30
The volume of KMnO4 needed for H2O2 25 16 10.5 7.09

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The volume of KMnO4 used at any time is proportional to conc. H2O2 at that time.

The values of K come almost constant and thus confirming first order reaction. For velocity constant, take average of all values of K.

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