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E118. In the polarographic determination of Fe 3 by com
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Uploaded: 02.02.2021
Content: 118.rar 30,59 kB
Uploaded: 02.02.2021
Content: 118.rar 30,59 kB
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E118. In the polarographic determination of Fe 3 by comparison, a standard solution with C (Fe 3) = 10-4 mol / dm3 was used. Its wave height is 15 mm. The following data were obtained for the test solution:
U, B -1.20 -1.25 -1.0 -1.35 -1.4 -1.40 - 1.45 -1.55
I, μA: 2 2.5 3 6 15 16 17.5 18
Determine the concentration of iron, mg / dm3 in the test solution.
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