This chapter is restricted to a description with the chemistry of arsenic compounds that have probable environmental value. An index of these compounds is presented in Desk 2-1. Within the processing of As2O3 the oxide is Commonly reduced withcarbon: 2As2O3+3C?→As4+3CO2 The reaction is endothermic which is performed at 500–800℃.The elemental http://https//chemscenter.com