39. Solving a chemistry problem
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7. Based on the given data, determine the concentration of the solution in the indicated units
Variant Ion to be determined Reaction of formation of a colored compound Initial current, μA Standard solution Test solution
concentration layer thickness, cm current, µa concentration layer thickness, cm current, µa
7 Fe3 C KSCN 90 0.00186 n. FeCl3 solution 1.0 54.6 Fe (in μg/ml) 5.0 83.4
Variant Ion to be determined Reaction of formation of a colored compound Initial current, μA Standard solution Test solution
concentration layer thickness, cm current, µa concentration layer thickness, cm current, µa
7 Fe3 C KSCN 90 0.00186 n. FeCl3 solution 1.0 54.6 Fe (in μg/ml) 5.0 83.4
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