1.Research the caustic soda mix sulfuric acid copper the response condition 2.2NaOH+CuSO4=Cu(OH)2+Na2SO4 The caustic soda joins the sulfuric acid copper production cupric hydroxide precipitation and the sodium sulfate3.Experiment thing:Spirit lamp,filter paper,glass rod and so on4.Laboratory procedure:In the caustic soda joins the sulfuric acid copper production blue color to precipitate,heats up the blue color to precipitate again,the observation responds the phenomenon Conclusion:The caustic soda joins the sulfuric acid copper to respond the cupric hydroxide precipitation and the sodium sulfate Cu(OH)2=CuO+H2OThe cupric hydroxide precipitation heating turns the copper oxide and wate