The kinetic and mechanistic study of 3-methyl-2-butanone has been explored with isoquinolinium bromochromate (IQBC) in aqueous acidic acid medium at temperature 308 K. The rate of reactions was found proportional to first power of concentration IQBC and H+ ion. The study provides an evidence for per complex formation between oxidant's species and enolic ketone. The rate of oxidation increases with, decreasing dielectric constant of the medium. The effect of salt does not alter the rate of reaction. The added catalysts CuSO4 and MnSO4 bring about the change in rate of oxidation. The study discards the involvement of free radicals based mechanism for stoichiometric ratio 1:1 of the reaction. Several thermodynamic parameters were determined at different temperatures. The mechanism and rate law was proposed accordingly.