Chapter 25: Q. 5 (page 686)
Why is it necessary to buffer solutions in organic voltammetry?
Short Answer
If not buffer solutions in organic voltammetry, there can be a change invalue at the electrode during the reaction.
Chapter 25: Q. 5 (page 686)
Why is it necessary to buffer solutions in organic voltammetry?
If not buffer solutions in organic voltammetry, there can be a change invalue at the electrode during the reaction.
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Why is a high supporting electrolyte concentration used in most electroanalytical procedures?
The working curve for the determination of dopamine at a nanoneedle electrode by differential-pulse voltammetry (Figure 25-38) was constructed from the following table of data.
(a) Use Excel to perform a least-squares analysis of the data to determine the slope, intercept, and regression statistics, including the standard deviation about regression.
(b) Use your results to find the concentration of dopamine in a sample solution that produced a peak current of 2.92 nA. This value is the average of duplicate experiments.
(c) Calculate the standard deviation of the unknown concentration and its confidence interval assuming that each of the data in the table was obtained in a single experiment.
Define (a) voltammograms, (b) hydrodynamic voltammetry, (c) Nernst diffusion layer, (d) mercury film electrode, (e) half-wave potential, and (f) voltammetric sensor.
What is the purpose of the electrodeposition step in stripping analysis?
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