A reaction has a rate constant of $1\mathrm{.}17{10}^{-2}{s}^{-1}$ at $400\mathrm{.}0K$ and $0\mathrm{.}686s^{-1}$ at $450\mathrm{.}0K.$

Part A

Determine the activation barrier for the reaction.

$E_a=$

$kJmo{l}^{-1}$

Incorrect; Try Again; One attempt remaining

Part B

What is the value of the rate constant at $425K?$

$k=$

$s^{-1}$