In the following process of disproportionation,2ClO3−Chlorate      ion⇌ClO2−+ClO4−Perchlorate         ion;EClO4−/ClO3−o=+0.36VEClO3−/ClO2−o=+0.33VInitial concentration of chlorate ion was 0.1 M. The equilibrium concentration of per chlorate ion will be 1.9×10−x. Hence x is