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Question

Decomposition of H2O2 follows a first order reaction. In fifty minutes the concentration of H2O2 decreases from 0.5 to 0.125 M in one such decomposition. When the concentration of H2O2 reaches 0.05 M, the rate of formation of O2 will be:


A

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B

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C

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D

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Solution

The correct option is A


Rate = k[H2O2]=0.69325×0.05

Rate of formation of H2O2=12×0.69325×0.05

=6.93×104mol min1


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