Kinetic Study of Paracetamol Hydrolysis: Evaluating of the Voltammetric Data

Hydrolysis of paracetamol in acidic media was studied using electrochemicaltechnique in different reaction temperatures. based on the fact that both paracetamol (par)and its hydrolyzed product, p-aminophenol (pap) are both electroactive and theirvoltammetric peaks do not overlap, differential pulse voltammetry was used for thedetermination of the remained par concentration in the reaction vessel as well as producedpap concentration. then, the kinetic parameters of par hydrolysis including reaction ratesand half-lives in various temperatures and the activation energy of the reaction werecalculated using proposed accurate method. par is hydrolyzed to pap in the presence ofhydronium ion via first-order kinetic reaction with the reaction rates of 8.9×10-4, 2.16×10-3,4.21×10-3, 6.26×10-3 and 1.46×10-2 min-1 at the reaction temperatures of 50, 60, 70, 80 and 90°c, respectively. the activation energy of the hydrolysis reaction was calculated to be 63.61kj mol-1