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A first order reaction is 50% complete i...

A first order reaction is 50% complete in 30 minutes at `27^(@)C` and in 10 minutes at `47^(@)C`. The reaction rate constant at `27^(@)C` and the energy of activation of the reaction are respectively

A

42.84kJ `//`mol

B

34.84 KJ` //` mol

C

84.00 KJ `//` mol

D

30.00 KJ` //`mol

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The correct Answer is:
A
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