Oxidation number of sulphur in h2so5 July 8, 2019 16 32 64 128 Oxidation number of sulphur in h2so5 is 6 this is observed because Oxidation number of sulphur in caro's acid h2so5 is Calculate the oxidation number of sulphur chromium and nitrogen in h2so5 Oxidation number of sulfur in h2so4 H2s2o3 oxidation number Oxidation number h2o2 S2o8 2- oxidation number