This article presents the study result on Kinematics of oxidizing catalysis of lumomagnezon in the system: H2O-Mn2+-Lm-HCO3-H2O2 (1). The reaction speed of the process happening in the system depends strongly on the conditions for the reaction to be carried out. The study reasults has allowed to contruct a Kinematics experimental model of oxidizing catalysis the system.