In a decompostion reaction, the reaction decays 21.2 times more rapidly at 22°C then at 4 °C. What is the overall activation energy (kJ/mol) of the process ?

Question

Enter your answer as an integer. 

Answer 1

Use the Arrhenius equation: ln (k2/k1) = -Ea/R (1/T2 - 1/T1) and solve for Ea

k1 = 1

k2 = 21.2

T1 = 4 + 273 = 277K

T2 = 22 + 273 = 295K

R = 0.008314 kJ/mol-K (note to use the correct units to match units desired for Ea)