电解精炼铜实验的改进

Improvement of Electrolytic Refining Experiment of Copper

以铜丝为电极、以聚丙烯酸钠（一种高吸水性聚合物）和氨的水溶液为电解质进行铜电解实验，电解过程中可明显观察到阳极的铜溶解、铜离子从阳极向阴极移动、单质铜在阴极析出等实验现象。该实验具有彰显原理、操作简单、现象明显、安全环保等优点。

Using copper wire as electrode, sodium polyacrylate （a super absorbent polymer） and ammonia solution as electrolyte, this paper designed the electrolysis experiments. Experi- mental phenomena were clearly observed in the electrolysis process： the dissolution of anode cop- per, copper ion moving from the anode to the cathode and the precipitation of copper on the cath- ode. This experiment had advantages of manifesting the principle, simple, obvious phenomena, safe and green.