For the reaction of $H_{2}$ with $I_{2}$, the rate constant is $2.5 \times 10^{-4} \,…
For the reaction of $H_{2}$ with $I_{2}$, the rate constant is $2.5 \times 10^{-4} \, \text{dm}^{3}\text{mol}^{-1}\text{s}^{-1}$ at $327^{\circ}C$ and $1.0 \, \text{dm}^{3}\text{mol}^{-1}\text{s}^{-1}$ at $527^{\circ}C$. The activation energy for the reaction, in $kJ\, \text{mol}^{-1}$ is:
$R = 8.314 \, J\,K^{-1}\text{mol}^{-1}$