About This Chapter
Equilibrium & Reactions - Chapter Summary
Our top science instructors have created fun lessons you can access 24/7 to get a comprehensive overview of equilibrium and reaction concepts. Enjoy an in-depth exploration of topics that include Le Chatelier's principle, the Henderson equation and the common ion effect. Review the lessons to boost your confidence and enhance your ability to:
- Define chemical equilibrium and explain how it is dynamic
- Share how the disruption and re-establishment of equilibrium is described via Le Chatelier's principle
- Provide the definition of buffers and calculate pH and pOH
- Explain the meaning of the Henderson equation
- Make equilibrium calculations involving the common ion effect
- Discuss the process of oxidation, reduction and redox reactions
- Identify reducing and oxidizing agents and discuss how they relate to the loss and gain of electrons
This chapter enables you to learn from and interact with qualified experts in a secure online environment. Whether at home or on-the-go, you can review fun lessons presented by top instructors and reach out to experts who can clarify details about equilibrium and reactions. The multiple-choice quizzes in this chapter make it easy to find out how much you understand about concepts covered in the lessons. A practice exam is also available to give you a comprehensive review of this chapter.
1. Equilibrium: Chemical and Dynamic
Learn the definition of chemical equilibrium and how it is dynamic. Discover what the equilibrium constant is and how it shows whether the reaction favors the reactants or products. Learn how chemists designate equilibrium in an equation and how they show the difference in reaction rate.
2. LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium
Learn how Le Chatelier's Principle describes the disruption and re-establishment of equilibrium. Learn to explain the factors that disrupt equilibrium, such as concentration, temperature, and pressure. Learn how each of these factors affects a system in equilibrium.
3. The pH Scale, Solutions & Buffers
What do lemons, drain cleaner and blood have in common? They are either acids or bases. This lesson will explore acids and bases, giving examples and definitions. It will also explain how to calculate the pH and the pOH, and will define buffers.
4. The Henderson Equation: Definition & Examples
This lesson will help you understand the different forms of the Henderson-Hasselbalch equation. You will also learn about a few applications of the Henderson-Hasselbalch equation.
5. The Common Ion Effect and Selective Precipitation
Learn what the common ion effect is, how to make equilibrium calculations involving it, and how to find the concentrations of ions when adding reactions in equilibrium to solutions that already contain ions.
6. Oxidation & Reduction Reactions in the Metabolism: Process & Significance
Oxidation and reduction reactions, collectively known as redox reactions, take place in body cells and are important for the production of energy, namely ATP. Oxidation involves the loss of electrons and reduction involves the gain of electrons.
7. Redox (Oxidation-Reduction) Reactions: Definitions and Examples
This short video will explain oxidation-reduction reactions, or redox reactions for short. The focus is on how electrons are transferred during redox reactions. Learn some neat mnemonic devices to help you remember when an atom is oxidizing or reducing.
8. Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents
Learn how to identify an oxidizing agent and a reducing agent and how the loss or gain of electrons applies to each one. Learn the relationship between an oxidized or reduced substance and the oxidizing or reducing agent associated with it. Discover what steps to take to balance a redox reaction.
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