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1.实验用品Y形管、多用滴管、酒精灯、药匙、硫酸亚铁晶体、铁丝、蒸馏水、氢氧化钠溶液、煤油。2.实验装置(如图1所示)图13.准备工作取一支Y形管,先在其左支管内加入0.3g硫酸亚铁晶体、一团铁丝(防止硫酸亚铁氧化生成硫酸铁)、5mL蒸馏水,振荡Y形管让固体溶解;再在Y形管中的右支管内加入5mL氢氧化钠溶液,用酒精灯加热Y形管右支管的底部,赶跑溶液中的氧气;最后再在Y形管内加入适量的煤油至上
1. Experimental supplies Y-shaped tube, dropper, alcohol lamp, medicine spoon, ferrous sulfate crystals, iron wire, distilled water, sodium hydroxide solution, kerosene. 2. Experimental setup (as shown in Figure 1) Figure 13. Preparatory work Take a Y-tube, add 0.3g ferrous sulfate crystals in its left branch tube, a group of wire (to prevent oxidation of ferrous sulfate to form ferric sulfate) , 5mL of distilled water, shaking the Y-tube to dissolve the solid; then add 5mL sodium hydroxide solution in the right branch of the Y-shaped tube, the bottom of the right branch of the Y-shaped tube is heated with an alcohol lamp to drive off the oxygen in the solution; In the Y-tube add the right amount of kerosene first