# 17.1 The equilibrium law

## Experiments

Here are experiments our science specialists have selected to support the IB* topic.

Recommended

### The Determination of an Equilibrium Constant

Experiment #10 from Advanced Chemistry with Vernier

In this experiment, you will

• Prepare and test standard solutions of FeSCN2+ in equilibrium.
• Test solutions of SCN of unknown molar concentration.
• Determine the molar concentrations of the ions present in an equilibrium system.
• Determine the value of the equilibrium constant, Keq, for the reaction.

Recommended

### Chemical Equilibrium: Finding a Constant, Kc

Experiment #20 from Chemistry with Vernier

In this experiment, you will determine the equilibrium constant, Kc, for the following chemical reaction:

${\text{F}}{{\text{e}}^{{\text{3 + }}}}{\text{(aq) + SC}}{{\text{N}}^{\text{ - }}}{\text{(aq)}} \leftrightarrow {\text{FeSC}}{{\text{N}}^{{\text{2 + }}}}{\text{(aq)}}$
${\text{iron(III) + thiocyanate}} \leftrightarrow {\text{thiocyanoiron(III)}}$

### Investigating LeChatelier’s Principle

Experiment #13 from Vernier Chemistry Investigations for Use with AP* Chemistry

This investigation will take advantage of your knowledge of LeChatelier’s Principle. It may also deepen understanding of equilibrium in general. The objective is to prepare six equilibrium systems in a set of test tubes that display the colors red, orange, yellow, green, blue, and violet.

Educational Standard
International Baccalaureate (IB)
Subject
Chemistry
Section