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硫化镉难以沉淀的原因,是由于在盐酸介质中,Cd~(2+)能与 Cl~-形成一系列氯—镉络合物[CdCl_n]~((2-n))(n≤4),从而使可形成 CdS 沉淀的游离的 Cd~(2+)浓度大大降低。本文从理论计算与实验结果两方面论述了这一问题。
The reason why cadmium sulfide is hard to precipitate is that Cd 2+ can form a series of CdCl_n ~ (2-n) (n≤4) with Cl ~ - in hydrochloric acid medium, , So that the concentration of free Cd 2+ that can form CdS precipitate is greatly reduced. This article discusses this issue from two aspects: theoretical calculation and experimental results.