All Equilibrium articles – Page 2

Demonstration

The equilibrium between two coloured cobalt species

In association with Nuffield Foundation

In this demonstration the equilibrium between two different coloured cobalt species is disturbed. Le Chatelier’s principle is used to predict a colour change.

Class experiment

Exploring the chemistry of chromium, molybdenum and tungsten

Discover how transition elements differ in aspects of colour, precipitate formation, changes in oxidation state and equilibria. Includes kit list and safety instructions.

Resource

Measuring an equilibrium constant on a microscale

Use your microscale titration apparatus to determine the equilibrium constant for the reaction between silver(I) and iron(II) ions

Class experiment

Using indigestion tablets to neutralise an acid | 14-18 years

In association with Nuffield Foundation, By Kristy Turner

Investigate and measure the neutralising effect of indigestion tablets (antacids) on hydrochloric acid in this class practical. Includes kit list and safety instructions.

Resource

Challenging Medicines: Physiochemical Properties - Practicals

In association with Reckitt Benckiser

Practical experiments associated with the handouts for Physiochemical Properties. Investigating the dissolution, pKₐ and rates of hydrolysis of everyday tablets are covered.

Resource

Rates and equilibria

This activity demonstrates the links between the topics of rates of reaction and the equilibrium law. It provides students with an explanation of the equilibrium law and helps them explain why Le Chatelier’s principle works for temperature, concentration and pressure.

Resource

Titration screen experiment

Give students the opportunity to conduct their own titration experiment on a computer or tablet. This resource also includes a redox titration experiment.

Resource

Heat transfer and insulation: primary science podcasts

Join Kareena and her superhero friend K-mistry for this short podcast introducing children to thermal conductors and insulators.

Resource

Chemistry in your cupboard: Veet

In association with Reckitt Benckiser

Link the post-16 topics of amino acids and proteins, bonding, reaction rates and equilibria and Le Chateliers principle to the topic of hair removal. Learn about a range of real life contexts for these chemical ideas through written material, and questions to encourage learning and test understanding.

Resource

Chemistry in your cupboard: Harpic

In association with Reckitt Benckiser

Link the post-16 topics of group bonding, acid rain, equilibria and Le Chateliers principle and strong and weak acids to the topic of removing limescale. Learn about a range of real life contexts for these chemical ideas through written material, and questions to encourage learning and test understanding.

Resource

Defining a ‘weak’ acid

Starting from its K_a (or pK_a) value, learners calculate as much information as you need to show what is meant by ‘weak’ in weak acid.

Resource

Thermodynamics and equilibria of the Solvay process

A worksheet with questions on the thermodynamics and acid-base aspects of the Solvay process and the uses of the products. This resource is part of the ‘Sodium carbonate – a versatile material’ resources collection, which presents learning material based on the manufacture and uses of sodium carbonate made by the ...

Resource

Manufacturing sodium carbonate by the Solvay process

An account of the Solvay process. This resource is part of the ‘Sodium carbonate – a versatile material’ resources collection, which presents learning material based on the manufacture and uses of sodium carbonate made by the Solvay (ammonia-soda) process.  

Class experiment

Equilibria involving carbon dioxide in aqueous solution

In association with Nuffield Foundation

Use this demonstration or class practical to illustrate changes to equilibria in carbonated soda water. Includes kit list and safety instructions.

Class experiment

A chromate–dichromate equilibrium

In association with Nuffield Foundation

Try this class practical to investigate an equilibrium between chromate(VI), dichromate(VI) and hydrogen ions. Includes kit list and safety instructions.

Demonstration

The effect of pressure and temperature on equilibrium | Le Chatelier’s principle

In association with Nuffield Foundation

Try this demonstration to explore the effects of pressure and temperature on an equilibrium mixture with your students. Includes kit list and safety instructions.

Demonstration

The effect of concentration and temperature on an equilibrium | Le Chatelier’s principle

In association with Nuffield Foundation

Try this demonstration to illustrate how changing chlorine concentration or temperature shifts the position of an equilibrium. Includes kit list and safety instructions.

Class experiment

An equilibrium using copper(II) and ammonia

In association with Nuffield Foundation

Try this practical to explore an equilibrium involving copper(II) ions, with copper(II) sulfate, ammonia and sulfuric acid. Includes kit list and safety instructions.

Demonstration

The effect of concentration on equilibrium | Le Chatelier’s principle

In association with Nuffield Foundation

Illustrate the reversible reaction between bismuth(III) oxychloride and bismuth(III) chloride in this demonstration. Includes kit list and safety instructions.

Resource

Swimming pool chemistry | 16–18 years

Synoptic questions explore structure and bonding, equilibrium and spectrometry and spectroscopy in the context of swimming pools