Studies on Liesegang rings of copper molybdate in agar gel medium

► The insoluble product precipitates rhythmically in the formation of bands. ► Concentration of outer and inner electrolytes shows influence on periodicity. ► Concentration of copper ions increases with distance of the ring from gel interface. ► System obeys time law, spacing law and width law. ► Width of the ring '∆x' is directly proportional to the diffusion depth 'xn'.