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1实验装置实验装置如附图。2实验方法1．将两个三角架放在水槽内，向水槽内加30％的氢氧化钠溶液至三角架高度的6／7左右。2．在三角架上各放一个青霉素药瓶，向其中一个小瓶中加人2mL浓硝酸，向另一个小瓶中加入2mL稀硝酸。3．向两个小瓶中各放入两小块铜片。在三角架外侧迅速
1 experimental device Experimental device such as the drawings. 2 experimental methods Place two tripods in the sink and add 30% sodium hydroxide solution to the sink to a height of about 6/7 of the tripod. 2. Place a penicillin bottle on the tripod, add 2 mL of concentrated nitric acid to one of the vials, and add 2 mL of dilute nitric acid to the other vial. 3. Two small copper pieces were placed into each of the two vials. Rapidly outside the tripod