20. Решение задачки по химии №132

3. During amperometric titration of 10.0 ml of lead solution with a standard Na2SO4 solution at E = 1.0 V, the following data were obtained:
V(Na2SO4), ml 0 0.5 1.0 1.5 2.0 2.5
T(Na2SO4)=0.004387 IdμA 105 72 40 30 30 29
Construct a titration curve and calculate the concentration of lead in the solution, mg/l.

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