APPROACH TO THE COMPOSITION OF THE COMPLEX ION IN THE ZINC-PLATING SOLUTION OF AMMONIUM SALT (NH_4 CI) FREE FROM CYANIDES

Yang Liandi Wu Changju Wen Hongyan (Department of Chemistry)  

This paper proves theoretically and experimentally, that the ion Zn~(2+) inthe Zinc-plating solution of ammonium salt (NH_4Cl) exists essentially in the form of Zn(Ⅱ)-Cl(Ⅰ) complex ion, while the content of the Zn(Ⅱ)-NH_3 complex ion is very small.

【Key Words】： Zn(Ⅱ) -Cl(Ⅰ) complex ion Zn(Ⅱ) -NH_3 complex ion electrophoresis equilibrium constant

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