question_answer 42)

  Activation energy of a chemical reaction can be determined by.......... (a) determining the rate constant at standard temperature (b) determining the rate constant at two temperatures (c) determining probability of collision (d) using catalyst

Answer:

                  (b) Activation energy of a chemical reaction is related to rate constant of a reaction at two different temperatures i.e., k1 and k2 respectively where,                 = activation energy  =higher temperature  slower temperature = rate constant at temperature  = rate constant at temperature  This equation is known as Arrhenius equation.