Question

The rate constant, the activation energy and the Arrhenius parameter of a chemical reaction at ${25}^{o}C$ are $3.0\times {10}^{-4}{s}^{-1}$, $104.4$ $kJ$ ${mol}^{-1}$ and $6.0\times {10}^{14}{s}^{-1}$ respectively. The value of rate constant at $T⟶\infty$ is:

• A. $2.0\times {10}^{18}{s}^{-1}$
• B. $6.0\times {10}^{14}{s}^{-1}$
• C. $\infty s^{-1}$
• D. $3.6\times {10}^{30}{s}^{-1}$

Answer 1

The correct option is B $6.0\times {10}^{14}{s}^{-1}$

$k=3\times {10}^{-4}{s}^{-1};E_a=104.4kJ{mol}^{-1};A=6.0\times {10}^{14}{s}^{-1};T=298K\left(25℃\right)$
For $T⟶\infty ,k=A=6.0\times {10}^{14}{s}^{-1}$