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Cracking hydrocarbons on a microscale

Description

A microscale experiment, cracking the hydrocarbons in paraffin to form shorter alkanes and alkenes.

Credits

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



Apparatus Chemicals

Eye protection

Each working group requires:

Comboplates®, 2 (Note 1)

Lids for the Comboplate (with one long and one short port), 2

Syringe (10 cm3)

One 10 – 15 cm piece of straight glass tube, about 2 – 3 mm bore. This must be narrow enough to allow the silicone tubing to expand over it

L-shaped pieces of glass tube (5 – 6 cm in height, 2 – 3 cm for the L piece and 2 – 3 mm bore), 2

Silicone tubing (1 – 2 cm length, 3 mm bore,1 mm wall), 4

Dropping pipette

Matches

Microburner filled with ethanol (HIGHLY FLAMMABLE) or Industrial Denatured Alcohol, IDA (HIGHLY FLAMMABLE, HARMFUL)

Mineral wool (preferably 'Superwool')

Aluminium oxide, microspatula per group

Liquid paraffin (also known as medicinal paraffin), about 0.5 cm3 per group

Bromine water, 0.01 M (HARMFUL), about 3 cm3 per group

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

 



 






 

A microscale experiment, cracking the hydrocarbons in paraffin to form shorter alkanes and alkenes.

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.