Sulfur dioxide reacts with chlorine to produce thionyl chloride (used as a drying agent for inorganic halides) and dichlorine oxide (used as a bleach for wood, pulp, and textiles). so2(g) + 2cl2(g) → socl2(g) + cl2o(g) if 0.400 mol of cl2 reacts with excess so2, how many moles of cl2o are formed?