Abstract:

The variation of preoscillatory time and period with initial concentration of every substance in the phenol-BrO_3~--H_2SO_4 batch system has been studied. It is found that the oscillating behavior of the system is very strange: First, the period of the oscillation increases with time, as usual oscillations, then decreases with time in some ranges of concentration. This oscillation is called “period-doublemontonous” oscillation. The phenomena arc first published. The electrode potential of the system exalts likelycatatropy with the concentration of phenol. For BrO~-_3 and H_2SO_4 this phenomenon cannot emerge. This oscillation cannot be explained with FKN or OKN mechanism. Some details will be submitted later.