Chapter 17: Q15P (page 428)
What does a mediator do?
Between the analyte and the electrode, the mediator transfers electrons.
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Peak current and scan rate (v) are listed for cyclic voltammetry of the reversible reaction Fe( II ) Fe(III ) of a water-soluble ferrocene derivative in 0.1MNaCLIf a graph of versusgives a straight line, then the reaction is diffusion controlled. Prepare such a graph and use it to find the diffusion coefficient of the reactant from Equation17 - 21for this one-electron oxidation. The area of the working electrode is, and the concentration of reactant is 1.00mM.
Aunknown containing (leadLactate, FM 385.3) plus inert material was electrolyzed to produce . Was the PbO2deposited at the anode or at the cathode? Find the weight percent of lead lactate in theUnknown.
Suppose that the diffusion current in a polarogram for reduction of at a mercury electrode isIf the solution containsof 25mLofwhat percentage ofis reduced in the 3.4 min required to scan from?
What are the advantages of using a microelectrode for
voltametric measurements?
17-18. can be analysed by titration with coulometric ally generated
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To of sample were added 4gof KI. Electrolysis required812s at. 52.6mA . Calculate the concentration ofrole="math" localid="1654769975824" in the sample.
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