44. Solving a chemistry problem

44. Solving a chemistry problem

571. Determine the concentration of nickel (mg/cm3) in the test solution, if during amperometric titration of a 20.00 cm3 solution with an alcohol solution of dimethylglyoxime (DMGO) with a nickel titer of 0.00203 at E = -1.76V, the following results were obtained (Table 34) .
Table 34
Task No. Volume of titrant and diffusion current Id; uA
571 VDMHO, cm3 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
id; µA 240 190 140 93 41 76 110 145 180

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