O2 h2 reaction type July 8, 2019 16 32 64 128 H2 o2 h2o reaction type H20 h2 o2 reaction type H2 o2 h2o2 reaction type H2 o2 → h2o reaction type H2 o2 → h2o2 reaction type H2 g o2 g reaction type O2 + h2 Oxidation number h2o2