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The hydration of alkenes

Description

A demonstration of the hydration of alkenes. Students react hex-1-ene to make hexan-2-ol, which is then distilled.

Credits

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



Apparatus Chemicals

Each group of students will need:

Goggles

Disposable nitrile gloves

Beaker (250 cm3)

Measuring cylinder (5 cm3 or 10 cm3), 2

Boiling tubes, 2

Glass stirring rod

For the distillation the teacher will need:

Eye protection

Beaker (250 cm3)

Separating funnel (250 cm3)

Conical flask (250 cm3)

Filter funnel

Filter paper

Distillation apparatus, with thermometer (0-200°C or 0-250°C) (see diagram)

Test-tube rack

Test-tubes, with corks, 8

Forceps

Scalpel

Distilled or deionised water, 10 cm3

Each group of students will need:

Ice, a few lumps

Hex-1-ene (IRRITANT, HIGHLY FLAMMABLE),
 5 cm3 (Note 1)

Sulfuric acid, 75% (CORROSIVE), 5 cm3 (Note 2)

For the distillation the teacher will need:

Anhydrous sodium carbonate (IRRITANT), 25 g

Bromine water, 0.01 M (HARMFUL at this concentration), about 1 cm3 (Note 3)

Acidified potassium manganate(VII) solution, about 0.001 M, about 1 cm3 (Note 4)

Sodium (HIGHLY FLAMMABLE, CORROSIVE), a small piece no bigger than 2 mm (Note 5)

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

 


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Chemguide


Page last updated September 2016

A demonstration of the hydration of alkenes. Students react hex-1-ene to make hexan-2-ol, which is then distilled.

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.