i) Write Arrtenius equation. ii) Define activation energy (Ea). iii) Rate constant K2 of a reaction at 310 K is two times of its rate constant K.

Question

The effect of temperature on rate of reaction is given by Arrhenius equation.

i) Write Arrtenius equation.

ii) Define activation energy (Ea).

iii) Rate constant K₂ of a reaction at 310 K is two times of its rate constant K., at 300 K. 

Calculate activation energy of the reaction. 

(1og2 0.3010, log 1=0)

Answer 1

i) K = Ae^-Ea/RT or

log K = Log A\(\frac{-Ea}{2.303RT}\)

ii) Activation energy is the energy required to form an activated complex or It is the energy difference between the activated complex and the reactant molecules.