95. Determine the concentration of zinc (mg / l) in the test solution, if during amperometric titration of 10.0 ml of this solution with a solution of K4Fe (CN) 6 with T (K4 Fe (CN) 6 / Zn) \u003d 0.00244, the following results were obtained:
Indicators
Task V(K4Fe(CN)6), ml 0 0.2 0.4 0.5 1.0 1.5 2.0 2.5 3.0
95 Id, μA 30.0 29.0 31.0 32.0 32.0 60.0 137.0 220 300

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