Kinetics of the reaction of chromium trioxide with formic acid in aqueous solution

The activation energy, the rate constant, and the partial reaction orders were determined for the reduction of chromium(VI) to chromium(III) by formic acid in a CrO3 aqueous solution. The calorimetric method was used to study the reaction kinetics within the 0-30 min. range with uncontrolled self-heating of the reaction mixture. Within the range 30-600 min the kinetic parameters were studied under isothermal conditions.