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Acid in the air

Description

In this experiment, the corrosion of metals is tested under different atmospheric conditons: dry air, moist air and air polluted by sulfur dioxide.

Credits

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



Apparatus Chemicals

Eye protection

Each working group will need:

Access to a fume cupboard

Access to metal cutters (Note 1)

Beaker (100 cm3)

Transparent plastic sandwich boxes with tightly fitting lids

 (typically l x w x h: 18 x 10 x 8 cm), 3 (Note 2)

Expanded (foam) polystyrene sheet, about 1 cm thick, to support the metal samples inside box (Note 3)

Aluminium foil

Copper foil

Iron - use thin steel sheet

Lead foil (TOXIC, DANGEROUS FOR THE ENVIRONMENT)

Magnesium ribbon

Tin foil or thin sheet

Zinc foil

Silica gel granules, about 30 g

For the sulfur dioxide solution (Note 4):

Sodium metabisulfite (HARMFUL), 9.5 g

Dilute sulfuric acid, 0.5 M, (IRRITANT), 100 cm3

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

 



 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 




Page last updated October 2015

In this experiment, the corrosion of metals is tested under different atmospheric conditons: dry air, moist air and air polluted by sulfur dioxide.

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.