7.1 Equilibrium

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

Determining the Ksp of Calcium Hydroxide

Experiment #23 from Advanced Chemistry with Vernier

In this experiment, you will

• Titrate a saturated Ca(OH)2 solution with a standard HCl solution.
• Determine the [OH] for the saturated Ca(OH)2 solution.
• Calculate the Ksp of Ca(OH)2.

Recommended

Determining Ka by the Half-Titration of a Weak Acid

Experiment #24 from Advanced Chemistry with Vernier

In this experiment, you will

• Conduct a reaction between solutions of a weak acid and sodium hydroxide.
• Determine the half-titration point of an acid-base reaction.
• Calculate the pKa and the Ka for the weak acid.

Recommended

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.

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:

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

Educational Standard
International Baccalaureate (IB)
Subject
Chemistry
Section
Core
Topic
7. Equilibrium

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.