Oscillating chemical reactions are complex systems involving a large number of chemical species, such as ionic, radical, and molecular intermediates, which exhibit uctuation in their concentration with time. One of the oscillating chemical reactions is BZ fH2SO4-KBrO3-CH2(COOH)2-Ce(IV)g system. In this work, for the rst time, a new, simple, and appropriate method, i.e. conductometry, was applied to the investigation of BZ oscillating system. Furthermore, presence of SiO2 nanoparticles containing NiO apparently a ected the intensity and period of BZ system. The e ect of varying concentration of H2SO4, KBrO3, CH2(COOH)2, and Ce(IV) on the conductance of BZ oscillating chemical system at 20 ( 0.1)C was also investigated. The obtained results of this work indicated that rather than potential and color of the BZ system, the conductance of system also oscillates during the reaction and is also proportional to the reactants concentration as well. The intensity and period of the oscillation are strongly dependent on the concentration of reactants.
