Learning Outcomes

Basic Concepts of Water Chemistry

Alkalinity and Treatment of Hard Water

Water Treatment and Purification Processes

Lesson Summary

In this module, you will be introduced to the properties of water, you will learn about alkalinity and the treatment of water hardness, and you will also learn the water treatment and purification processes as well as the chemical processes of water treatment.

Inorganic Chemicals and Organic Compounds

Metals and Metalloids

Laboratory Safety and Chemical Hygiene Plan

In this module, you will learn about inorganic chemicals and organic compounds, as well as how to reduce your exposure to VOCs and SOCs. discover the effects of heavy metals, and pollution control measures, and learn how to recognize and manage hazards and laboratory safety precautions.

Water Treatment and Purification - Course assessment

Learn how the principles of water chemistry drive its treatment and purification processes in this free online course.

Water Treatment and Purification

They say that ‘water is life’. It is one the most important compounds on Earth and consists of two chemical elements: hydrogen and oxygen. However, it is important to check and maintain water purity to protect health and the environment. This course explores water’s hygiene and other qualities and compares ‘hard’ and ‘soft’ water. We then conduct a chemical analysis of major and minor ions and explain laboratory hazard management.

Features and Cost of Corrosion

Process of Material Degradation

Types and Forms of Corrosion

Uniform and Galvanic Corrosion

Crevice and Pitting Corrosion

In this module, you will be introduced to the concept of corrosion, as well as the various processes that can cause corrosion. You will also be introduced to the different types of corrosion which are uniform, galvanic, crevice, and pitting corrosion, as well as the impact of each type of corrosion.

Forms of Corrosion with Examples

Electrochemical Nature of Corrosion

Thermodynamics Aspects of Corrosion

Free Energy in Corrosion

Relationship Between Delta G and Equilibrium Constant

In this module, you will be introduced to the different forms of corrosion, as well as the electrochemical nature of corrosion and its thermodynamics. You will also be introduced to the thermodynamics aspects of corrosion, the concept of free energy change, as well as the process of entropy change.

Relation Between Free Energy and Equilibrium Constant

Derivation of Nernst Equation

Standard Reduction Potential Series for Pure Metals

Reduction Potentials in Acidic and Neutral Solutions

Nernst Equation in terms of pH

In this module, you will be introduced to the relationship between free energy and the equilibrium constant, as well as how the Nernst equation can be derived for a reaction. You will also be introduced to the standard reduction potential series for pure metals, as well as the reduction potentials in acidic and neutral solutions.

Limitations of Standard Reduction Potential Series of Pure Metals

Concentration Cell Formation and Galvanic Series

Examples of Concentration Cell and Spontaneity of Corrosion Process

Spontaneity of Corrosion Process and Introduction to Pourbaix Diagram

Construction of Pourbaix Diagram

In this module, you will be introduced to the various limitations of standard reduction potential series of pure metals, as well as the concept of concentration cell formation. You will also be introduced to the galvanic series, some examples of concentration cells, as well as the spontaneity of the corrosion process and Pourbaix diagrams.

Diploma in Electrochemistry of Corrosion - First Assessment

Construction of Pourbaix Diagram for Ni-H2O System

Analyzing the Pourbaix Diagram for Ni-H2O System

Stability Phases in the Pourbaix Diagram for Ni-H2O System

Pourbaix Diagram for Ni-H2O and Al-H2O

Inference From Pourbaix Diagram for Fe-H2O and Al-H2O

In this module, you will be introduced to the construction of the Pourbaix diagram for a Ni-H2O system, as well as happens when the pH concentration of the H+ ion increases. You will also be introduced to the positions where the acidic reactions and basic reactions will happen, as well as the schematic phase diagram for aluminium.

Estimation of Corrosion Rate

Expressing Corrosion Rate

Correlation Between Current Flow and Corrosion

Exchange Current Density

Exchange Current Density and Standard Hydrogen Electrode

In this module, you will be introduced to the steps used in the estimation of corrosion rate, as well as kinetics or rate of corrosion and the rate of dissolution of metal. You will also be introduced to the steps for calculating the corrosion rate in the form of mass loss per area per unit time.

Electrode Double Layer and Polarization

Correlation Between Current Density and Overvoltage

Introduction to Butler-Volmer Equation

Derivation of Tafel Equation

Tafel Plot and Activation Polarization

In this module, you will be introduced to the concept of the electrode double layer, as well as the different types of polarization and the correlation between current density and overvoltage. You will also be introduced to the derivation of the Butler-Volmer equation, as well as how the Tafel equation is derived.

Activation Polarization, Concentration Polarization, and Total Polarization

Summary of Concentration Polarization (CP)

Mixed Potential Theory

Drawing the Evans Diagram

Changes in Corrosion Rate

Examples Showing the Mixed Potential Theory

In this module, you will be introduced to the concepts of activation polarization and concentration polarization, as well as total polarization. You will also be introduced to the derivation of the mixed potential theory, as well as some case studies that highlight the mixed potential theory and the events of corrosion.

Diploma in Electrochemistry of Corrosion - Second Assessment

Diploma in Electrochemistry of Corrosion - Course Assessment

A free online course on the electrochemical nature of corrosion, as well as the thermodynamics aspect of corrosion.

Diploma in Electrochemistry of Corrosion

This free online course on the electrochemistry of corrosion teaches you about the processes that can cause corrosion, as well as the impact of different forms of corrosion and how to derive the important Nernst equation. You will learn about the steps for constructing a Pourbaix diagram and be able to explain the relevance of the mixed potential theory.

Nitrogen and Nitrogen Compounds

Preparation of Ammonia in the Laboratory

Sulfur Physical Properties and Manufacture

This module discusses Nitrogen (N), the most abundant element in group 15, and Sulfur, a bright yellow element in group 16. You will learn about their properties and the environmental impact of nitrogen compounds, sulfur oxides, and acid rain.

Transition Elements and Their Properties

Redox Reactions & Coordination Bonds Formation

Stereoisomerism of Transition Element Complexes

Substitution of Ligands

Colour of Transition Metal Complexes

This module covers transition elements, the formation of coordination bonds and various coordination complex structures, the stereoisomerism of transition element complexes, and the substitution of water molecules with other ligands, among other related subjects.

Intermediate Chemistry: Nitrogen, Transition Elements & Metal Complexes: Course Assessment

This free online chemistry course covers the properties and uses of nitrogen, sulfur, and transition elements.

Intermediate Chemistry: Nitrogen, Transition Elements and Metal Complexes

Nitrogen gas is an inert (non-flammable) gas representing almost 78% of atmospheric air. This course teaches you about nitrogen, its reaction with hydrogen to produce ammonia, and the effects of its compounds on the environment. Then, we explore sulfur's physical properties and the production of sulfuric acid. The transition elements, their properties, redox reactions, and stereoisomerism of their complexes are also discussed.

Electrochemical Nature and Thermodynamics of Corrosion - Course Assessment

Analyze the electrochemistry and causes of corrosion in this free science course.

Electrochemical Nature and Thermodynamics of Corrosion

This free online course on the electrochemical nature and thermodynamics of corrosion teaches you about the concept of ‘corrosion’, as well as the various processes that can cause corrosion. You will also learn about the different forms of corrosion (uniform, galvanic, crevice, pitting, erosion, and stress-assisted corrosions), as well as how they affect the environment.