16. Determine the zinc concentration (mg/l and mg-eq/l) in the test solution if the 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 yielded 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
70 70 70 72 73 130 185 240 290

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