The concentration of H2S in wastewater samples was determined by coulometric titration using Kl as mediator and I3 as "titrant". standard concentration Peak area (a.u) (ppm) 50 8354 100 16925 150 25218 200 33584 250 42002 A 50 mL wastewater sample was placed in a coulometric cell, added with excess KI and starch indicator. Electrolysis was carried out at a constant current of 84.6 mA for 386 s to reach the end point of the titration. What is the concentration of H2S in the sample (in ppm)?
The concentration of H2S in wastewater samples was determined by coulometric titration using Kl as mediator and I3 as "titrant". standard concentration Peak area (a.u) (ppm) 50 8354 100 16925 150 25218 200 33584 250 42002 A 50 mL wastewater sample was placed in a coulometric cell, added with excess KI and starch indicator. Electrolysis was carried out at a constant current of 84.6 mA for 386 s to reach the end point of the titration. What is the concentration of H2S in the sample (in ppm)?
Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry
Section: Chapter Questions
Problem 22.28QAP
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