A spectrophotometric method for the quantitative analysis of Ni2 in pharmaceutical formulation yields a Sat of 0.475 a.u. for asingle standard whose concentration of nickel is 1.83 ppb. What is the concentration of Ni* in a sample of formulation for whichSamp is 0.341 a.u?Anone of the choicesB) 241 ppbC 0.260 ppbD 3.08 ppbE 1.31 ppb The use of mediator makes a coulometric titration a more adaptable analytical technique than controlled-potential coulometry. Andan example of a mediator is,Athe electrogenerated hydroxide for the coulometric titration of weak and strong acidsthe end-point of the coulometric titrationC.the electrochemical cell where coulometric titration will take placeDthe solid product of electrogravimetric analysisE the cathode or anode of the electrochemical cell

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.29QAP

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A spectrophotometric method for the quantitative analysis of Ni2 in pharmaceutical formulation yields a Sa of 0.475 a.u. for a single standard whose concentration of nickel is 1.83 ppb. What is the concentration of Ni* in a sample of formulation for which Samp is 0.341 a.u?