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Distribution of iodine between two immiscible solvents

Description

Using iodine crystals dissolved in equal volumes of two immiscible solvents, students can create an equilibrium distribution.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
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Apparatus Chemicals

For a class practical, each working group will need:

Eye protection

Test-tubes, 2

Corks to fit test-tubes, 2

Test-tube rack

Dropping pipettes, 2

Spatula

Cyclohexane (HIGHLY FLAMMABLE, HARMFUL, DANGEROUS FOR THE ENVIRONMENT),
 10 cm3(Note 1)

Iodine crystals (HARMFUL, DANGEROUS FOR THE ENVIRONMENT), a few small crystals (Note 2)

Potassium iodide solution, 0.5 M, 20 cm3

Refer to Health & Safety and Technical notes section below for additional information.

 






Page last updated October 2015

Using iodine crystals dissolved in equal volumes of two immiscible solvents, students can create an equilibrium distribution.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.