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由实验获得 Na_2S 沉淀贵贱金属氯络合物的顺序为 Au(Ⅲ)>Pd(Ⅱ)>Cu(Ⅱ)>Pt(Ⅳ)(?)Rh(Ⅲ)～Ir(Ⅲ)。利用这些反应结果,可用 Na_2S 分离 Cu-Rh,Cu-Ir,也可在盐酸介质中氧化酸浸贵贱金属的混合硫化物,仅使贱金属溶解而达到贵贱分离的目的。讨论其原因是动力学因素起主导作用。
The order of Au (Ⅲ)> Pd (Ⅱ)> Cu (Ⅱ)> Pt (Ⅳ) (?) Rh (Ⅲ) ~ Ir (Ⅲ) was obtained by the experiment. Using these reaction results, Na2-S can be used to separate Cu-Rh and Cu-Ir, and also mixed acid sulfide-mixed sulfide in hydrochloric acid medium to dissolve the base metal and achieve the purpose of separation. The reason for the discussion is that kinetic factors play a leading role.