63. Solving a chemistry problem

63. Solving a chemistry problem

81. Suggest a scheme for analyzing a mixture of cations according to acid-base classification.
Mixtures do not contain sediment, but may be colored.
Give reaction equations (characteristic and pharmacopoeial) for the detection of the underlined ion, indicating the analytical effect and properties of the resulting products.

81. Li Hg22 Ba2 Zn2 Fe3 Cu2

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