Exercise $13\mathrm{.}68$

A reaction has a rate constant of $0\mathrm{.}000256s^{-1}$ at $25C$ and $0\mathrm{.}172s^{-1}$ at $71C.$

Part A

Determine the activation barrier for the reaction.

Express the activation energy in kilojoule per mole to three significant figures.

$E_a=$

$kJmo{l}^{-1}$

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Part B

What is the value of the rate constant at $17C?$

Express the rate constant in inverse seconds to three significant figures.

$k=$

$s^{-1}$