Determination of zinc by bi-amperometric titration with potassium hexacyanoferrate(II)

Zinc, such as that occurring as a constituent of light alloys, can be determined by precipitation titration with potentiometric endpoint indication. The determination of zinc in the presence of cadmium is also possible.

2 K₄[Fe(CN)₆] + 3 ZnCl₂ → K₂Zn₃[Fe(CN)₆]₂ + 6 KCl

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