Salts of \(Ca^{2+}, Mg^{2+}, Al^{3+}, Pb^{2+}, NH_4\,^{+}\)
\(CuSO_4\), \(Cu(NO_3)_2\)
\(CuCl_2\)
Salts of ion ferum(II), \(Fe^{2+}\)
Salts of ion ferum(III), \(Fe^{3+}\)
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