Which are true for polarography? Polarography is amperometry conducted with a dropping Hg electrode. The diffusion current in the plateau region of the polarographic wave is proportional to the concentration of the analyte and is used for quantitative analysis. The half-wave potential for maximum current is characteristic of a given analyte in a given medium and can be used for qualitative analysis for the analyte. III IV Fresh Hg drops give reproducible results. V Polarography is used to primarily to study oxidations Hg may reduce when studying reductions. O II, IV, and V O II, III, and V O II, III, and IV O I and V I, III, and IV

Which are true for polarography? Polarography is amperometry conducted with a dropping Hg electrode. The diffusion current in the plateau region of the polarographic wave is proportional to the concentration of the analyte and is used for quantitative analysis. The half-wave potential for maximum current is characteristic of a given analyte in a given medium and can be used for qualitative analysis for the analyte. III IV Fresh Hg drops give reproducible results. V Polarography is used to primarily to study oxidations Hg may reduce when studying reductions. O II, IV, and V O II, III, and V O II, III, and IV O I and V I, III, and IV

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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* 23-21 The following cell was found to have a potential of 0.124 V: Ag|AGCI(sat'd)||Cu²*(3.25 × 10-³ M)|membrane electrode for Cu?+ When the solution of known copper activity was replaced with an unknown solution, the potential was found to be 0.055 V. What was the pCu of this unknown solution? Neglect the junction potential.
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Molar absorptivities of Nickel and Cobalt with 8-quinilinol are εCo = 3529 and εNi = 3228 at 365 nm, and εCo = 428.9 and εNi = 0 at 700 nm. Calculate concentration of nickel and cobalt in solution that gave Abs = 0.617 at 365 nm and Abs = 0.0235 at 700 nm
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