[o0CY0o]

Rate constants for the gas-phase decomposition of hydrogen iodide, 2HI(g) → H2(g) + I2(g),
are listed in the following table :
T/°C 283 356 393 427 508
k/mol-1 s-1 3.52 x 10-7 3.02 x 10-5 2.19 x 10-4 1.16 x 10-3 3.95 x 10-2
(a) Find the activation energy (in kJ mol-1) using all five data points.

i've been trying to use the arrhenius equation and also all the equations i know. however, it seems that i cannot work it out.
i think it is sth to do with the inital rate. i'm thinking of the fifth data minusing the 1st one. can anyone give me some hints?

[Yggdrasil]

When you're trying to fit with the Arrhenius Eq, did you remember to convert the temperature to kelvin?

[o0CY0o]

surely did