# Learning Objectives

- Page ID
- 84620

## Overall Unit

After completing this entire unit on electrochemical methods of analysis, a student will be able to:

- Describe each of the electrochemical methods discussed in the unit.
- Perform quantitative calculations for each of the methods if provided appropriate information or data.
- Compare the advantages and disadvantages of the different electrochemical methods of analysis.
- Select the best method from among those covered in the unit for a particular analysis and justify the choice.

## Problem set titled “Electrochemistry”

After completing this problem set, a student will be able to:

- Define the processes of oxidation and reduction.
- Define the meaning of an oxidizing and reducing agent.
- Describe what is meant by a half-reaction.

## Problem set titled “Chemical Energy”

After completing this problem set, a student will be able to:

- Relate chemical energy to electrochemical potential.
- Relate the sign of the electrochemical potential to the direction of a reaction.
- Define the standard state and explain why it is necessary to define a standard state.

## Problem set titled “Electrochemical Cells”

After completing this problem set, a student will be able to:

- Describe the components of an electrochemical cell, the purpose of each, and the process that occurs in each.
- Write a shorthand notation for an electrochemical cell.
- Describe the processes responsible for conduction of electricity in different part of an electrochemical cell.
- Describe what it means for a reaction to be chemically and electrochemically irreversible.

## Problem set titled “Use of the Nernst Equation”

After completing this problem set, a student will be able to:

- Calculate the potential of an electrochemical cell under standard and non-standard state conditions.
- Calculate the equilibrium constant for an electrochemical reaction.

## Unit on Ion Selective Electrodes

After completing this problem set, a student will be able to:

- Describe the functioning of an ion selective electrode.
- Describe the limitations in the use of ion selective electrodes.

## Problem set titled “Electrodeposition/Electrogravimetry”

After completing this problem set, a student will be able to:

- Describe how the method of electrogravimetry is performed.
- Determine if one species will interfere with another in electrogravimetry.

## Problem set titled “Coulometry”

After completing this problem set, a student will be able to:

- Describe how the method of coulometry is performed.
- Compare the advantages and/or disadvantages of electrogravimetry and coulometry.

## Problem set titled “Coulometric Titration”

After completing this problem set, a student will be able to:

- Describe how a coulometric titration is performed.
- Describe the advantages of a coulometric titration over a conventional redox titration.

## Problem set titled “Amperometric Titration”

After completing this problem set, a student will be able to:

- Describe the process of performing an amperometric titration.
- Draw the resulting plot of current vs. titrant volume for different scenarios in an amperometric titration.

## Problem set titled “Potentiometric Titration”

After completing this problem set, a student will be able to:

- Calculate the potential at various stages of a potentiometric titration.

## Problem set titled “Voltammetric Methods”

After completing this problem set, a student will be able to:

- Describe how it is possible to eliminate electrostatic migration be eliminated in an electrochemical cell.
- Describe why it is common to purge samples with an inert gas and conduct the analysis under an inert gas environment when performing voltammetry.

## Problem set titled “Anodic Stripping Voltammetry”

After completing this problem set, a student will be able to:

- Describe how anodic stripping voltammetry (ASV) is performed.
- Draw the output of an ASV analysis if given the identity of metal species being analyzed.
- Explain the advantages of ASV over methods such as electrogravimetry and coulometry.

## Problem set titled “Linear Sweep Voltammetry”

After completing this problem set, a student will be able to:

- Describe how linear sweep voltammetry (LSV) is performed.
- Draw the output of an LSV analysis for samples that are stirred or not stirred if given the identity of the species being analyzed.
- Explain how concentration and species identication is performed in LSV.
- Explain how differential pulse LSV is performed.
- Draw the output obtained from a differential pulse LSV analysis.
- Explain the advantages of differential pulse LSV over LSV.

## Problem set titled “Cyclic Voltammetry”

After completing this problem set, a student will be able to:

- Describe how cyclic voltammetry (CV) is performed.
- Draw an example of the output in CV for the analysis of reversible, chemical irreversible and electrochemically irreversible reactions.
- Provide a reaction mechanism that would explain the output of a cyclic voltammogram.