Kinetics of ion exchange resin amberlite IRA 400

I-131 has been employed as a tracer to study kinetics of first order reaction. The study was carried for different concentrations of KI solution [electrolyte], different temperatures and different amounts of ion exchange resins. Reaction rates were calculated by using first order reaction rate equation. From the reaction rates the energy of activation was calculated. The energy of activation was found to decrease with increase in concentration of the electrolyte. For concentration of 0.0025 KI solution, energy of activation is found to be 4.95 kJ/mole which decreases to 4.08 kJ/mole for 0.020 M solution.