Because there are similarities involving arsenic acid and phosphoric acid, the likelihood that arsenate can change the important phosphate team in biologically important molecules (including the monosaccharide phosphates and adenosine triphosphate) need to be deemed. In the processing of As2O3 the oxide is Generally lessened withcarbon: 2As2O3+3C?→As4+3CO2 The reaction is http://https//chemscenter.com