Question:

For the reaction of H₂ and I₂, the rate constant is 2.5 × 10⁻⁴ dm³ mol⁻¹ s⁻¹ at 327 °C and 1.0 dm³ mol⁻¹ s⁻¹ at 527 °C. The activation energy for the reaction, in kJ mol⁻¹ is: (R = 8.314 J K⁻¹ mol⁻¹)