21. Solving a chemistry problem

21. Solving a chemistry problem

1. Determine the concentration of zinc (mg/l and mg-eq/l) in the test solution, if during amperometric titration of 10.00 ml of this solution with a standard solution of K4Fe(CN)6 with T(K4Fe(CN)6/Zn)=0.00244 g/ml obtained the results presented in Table 3
Table 3
Volume of K4Fe(CN)6, ml 0 0.20 0.40 0.50 1.00 1.50 2.00 2.50 3.0
20.0 20.0 31.0 40.0 94.0 146 200 - -

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