Q33P Explain what is done in anodic s... [FREE SOLUTION]

Chapter 17: Q33P (page 430)

Explain what is done in anodic stripping voltammetry. Why is stripping the most sensitive voltammetric technique?

Short Answer

Expert verified

The process of anodic stripping voltammetry follows electro reduction, voltage direction and oxidation. As the analyte is concentrated from a dilute solution therefore, stripping is more effective than the voltammetric technique was given.

Step by step solution

Introduction

The process of anodic stripping voltammetry.

- By electro reduction into a thin film of mercury, the analyte is concentrated in stripping.

- While changing the voltage's direction the electroactive species is stripped off from the electrode.

- This leads to oxidation which is proportional to the deposited analyte.

- The effectiveness of stripping is due to the analyte getting concentrated in a dilute solution.

Explanation.

In stripping analysis, analyte from a dilute solution is concentrated at working electrode. The potential becomes more positive because of oxidation, and the peak current measured during oxidation is proportional to the concentration of analyte that was deposited. As the analyte is concentrated from a dilute solution therefore, stripping is more effective than the voltametric technique was given. Analysis is more sensitive towards longer concentration period..