一、铁片吸氧腐蚀实验的简单改进我对苏教版《实验化学》64面中的铁片吸氧腐蚀实验做了如下改进:将铁片放入稀盐酸中浸泡,洗去其表面的氧化物,然后取出,用水洗净。用铜棒在铁片上用力摩擦几下。在用铜棒摩擦过的地方滴上1小滴含酚酞的食盐水,并尽量让液滴铺开,静置。实验结果:大约2 min即可看到液滴边缘出现一丝 First, the iron oxide oxygen corrosion test simple improvement I Suji version of “Experimental Chemistry” 64 in the iron oxygen absorption corrosion test made the following improvements: The iron into the diluted hydrochloric acid soak, wash away the surface of The oxide is then removed and washed with water. Use a copper rod to rub a few times on the iron piece. Drop a drop of phenolphthalein-containing saline in a place rubbed with a copper rod, and spread the liquid drop as much as possible. Experimental results: A trace of the edge of the droplet can be seen in about 2 minutes