Zhanjiang medical oxygen equipment

(1) Iron is in contact with water and oxygen at the same time in the circle where the iron pot containing water is in contact with the water surface, and the corrosion is the most severe, indicating that iron is easy to rust when water and oxygen coexist. Stainless steel is processed into soft wire, which makes use of the ductility of stainless steel, so fill in: iron is in contact with water and oxygen at the same time, b;

(2) Copper and ferrous sulfate solids are recovered from wastewater, and the added metal reacts with copper sulfate without generating new impurities, so the extra metal X to be added is iron, and the extra iron can be removed by dilute sulfuric acid, so Y is sulfuric acid. The solutions obtained in the first step and the second step both contain ferrous sulfate, which can save the cost when mixing, so: iron, H2SO4, saves the cost.