Le Chatelier's Principle

Time to shake up the status quo with a presentation that describes Le Chatlier's Principle and has pupils examine situations in which equilibrium is upset. Four examples show different stresses to the reaction and the resulting shift. 

Sal introduces students to Hess's Law. The law states that a process's energy change is independent of how we get from one state to another. He sets up a series of reactions and solves them to illustrate the principles behind Hess's Law....

Why do reversible reactions just keep going and going? Savvy solution chemists learn how to influence reactants and products at equilibrium through a video lesson. Topics include the conditions that affect equilibrium, reaction rates,...

Why do reversible reactions just keep going and going? Savvy solution chemists learn how to influence reactants and products at equilibrium through a video lesson. Topics include the conditions that affect equilibrium, reaction rates,...

When compounds react with each other, the rate of the forward reaction and the backward reaction are the same when the reaction is in equilibrium. However, if other factors come into play, such as an increase in temperature, or the...

Why are some reactions sort of like watching a tennis match? Introduce junior chemists to the basics of equilibrium using a video from JFR Science. Topics include why and how reactions shift from products back to reactants, factors that...

Equilibrium reactions are able to reach a steady state of products and reactants, but what happens when this careful balance is disturbed? With the help of this instructional video, young chemists learn to apply Le Chatelier's...

How are chemical reactions like dating? A collision must first occur! In this hilarious approach to speeding up chemical reactions, viewers find out that five changes can increase the rate of reaction: smaller space, increased number of...

Colorful cobalt complexes make a great way to learn about Le Chatelier! Eager chemists explore equilibrium through a virtual lab. Individuals use solutions with two different concentrations and observe the color changes that indicate...

Explore the characteristics of a reaction in dynamic equilibrium. The 12th installment in a series of 35 video lessons discusses the concept of dynamic equilibrium. The video instructor uses animation to demonstrate the process.