Potentiometric titration A potentiometric titration of a 0.278 g sample of FeSO.7H,0 salt, in acidic medium, with a 0.011 M solution of potassium dichromate (K.Cr.0) was conducted. The potential is measured with respect to a calomel electrode (Edmat - 246 mV). The following graph represents the measured potential with respect to the volume of added dichromate. 700 675 650 Calculate E" for the half- reaction: Fe"+ e Fe (Show your work using Nernst equation). 625 600 575 550 Hint: Use the graph, to determine, approximately, the equivalence point and mid-point of the titration 525 500 475 450 425 400 (Am) 3

Potentiometric titration A potentiometric titration of a 0.278 g sample of FeSO.7H,0 salt, in acidic medium, with a 0.011 M solution of potassium dichromate (K.Cr.0) was conducted. The potential is measured with respect to a calomel electrode (Edmat - 246 mV). The following graph represents the measured potential with respect to the volume of added dichromate. 700 675 650 Calculate E" for the half- reaction: Fe"+ e Fe (Show your work using Nernst equation). 625 600 575 550 Hint: Use the graph, to determine, approximately, the equivalence point and mid-point of the titration 525 500 475 450 425 400 (Am) 3

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.21QAP

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