48. Solving a chemistry problem
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48. Solving a chemistry problem
13. Determine the concentration of zinc (mg/l) in the test solution, if amperometric titration of 10.00 ml of this solution with a K4Fe(CN)6 solution with T(K4Fe(CN)6/Zn)=0.00244 gave the following results:
V(K4Fe(CN)6), ml
0 0.20 0.40 0.50 1.00 1.50 2.00 2.50 3.00
Id , μA 4 30.0 31.0 30.0 32.0 80.0 200 310 - -
Answer: 4) 195 mg / l.
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