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The rate constant for the decomposition ...

The rate constant for the decomposition of a certain substance is `2.80 xx 10^(-1)M^(-1)s^(-1)` at `30^(@)C` and `1.38 xx 10^(-2)M^(-1) s^(-1)` at `50^(@)C`. The Arrhenius parameters (A) of the reaction is:
(`R=8.314 xx 10^(-3) kJ mol^(-1) K^(-1)`).

A

`8.68xx10^8 M^-1s^-1`

B

`2.16xx10^7 M^-1s^-1`

C

`4.34xx10^8 M^-1s^-1`

D

`3.34xx10^8 M^-1s^-1`

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