银元素的循环实验

Cycle Experiments of Silver Element

设计并完成了由5步构成的银元素的循环实验，从银粉出发，经过银在硝酸中溶解，银离子与氯离子反应生成氯化银沉淀，氯化银溶解于氨水，银氨络离子与乙炔反应生成乙炔银，水合肼将乙炔银还原为单质银等化学反应，完成了银的循环实验。

The cycle experiments of silver element were designed and carried out through 5 steps. First silver powder was dissolved in nitric acid and then silver ions reacted with chloride i- ons generated silver chloride precipitation, silver chloride dissolved in ammonia into silver ammo- nia complex which turned into acetylene silver by reaction with acetylene, and finally acetylene silver was reduced into silver again by hydrazine hydrate.