• # question_answer 70) Activation energy of a chemical reaction can be determined by A)  determining the rate constants at standard temperature B)  determining  the  rate  constants  at two temperatures C)  determining probability of collision D)  using catalyst

Knowing ${{K}_{1}}$and ${{K}_{2}}$at ${{T}_{1}}$and ${{T}_{2}},{{E}_{a}}$can be determined (Arrhenius equation).