試題詳解

7. The rate constant for the gas-phase decomposition of N₂O₅, N₂O₅ → 2NO₂ + (1/2)O₂ has the following temperature dependence: k (s^-1 ) = 4.9 × 10^-3 at 338 K, 5.0 × 10^-4 at 318 K, and 3.5 × 10^-5 at 298 K. The activation energy for the reaction is_________ kJ/mol. 
(A) 91.5
(B) 186
(C)100
(D) 19
(E)139