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Notes

Testing for Anions

Nyra Valentine Chemistry GCSE English 2 pages

Testing for Anions

Content of the notes (2)

Page 1

Testing for Anions

Page 2

To test for carbonates:

Add some barium chloride solution

If there are ions present this will produce a white precipitate of barium carbonate

Add some dilute hydrochloric acid

If there are carbonate ions present the mixture will fizz

This because carbonate will react with the acid to produce carbon dioxide gas

Testing for Anions

Collect the gas and pass it through limewater

The lime water should turn cloudy once all the barium carbonate has reacted

You end up with a colourless solution containing Be 2+ irons

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GCSE Chemistry (C4: PREDICTING/IDENTIFYING REACTIONS AND PRODUCTS) Note on Testing for Anions, created by Nyra Valentine on 01/04/2023.
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Nyra Valentine
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