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9 Cards in this Set
- Front
- Back
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What colour does lithium go in a flame test? |
Crimson |
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What colour does sodium go in a flame test? |
Yellow |
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What colour does potassium go in a flame test? |
Lilac |
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What colour does calcium go in a flame test? |
Red/brown |
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What colour does barium go in a flame test? |
Green |
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Precipitate tests for positive ions |
Add a few drops of sodium hydroxide, if it forms an insoluble hydroxide and its: White - can be Calcium, Magnesium, Aluminium (redissolves in excess of NaOH) Blue -Copper Iron II - Green Iron III - Brown |
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Testing for carbonates |
React with dilute acid, if limewater turns cloudy it is carbonate as CO2 is present |
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Testing for halides |
Add dilute nitric acid and silver nitrate solution:Chloride will form white precipitate of silver chloride Bromide will form cream precipitate of silver bromide Iodide will form yellow precipitate of silver iodide |
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Testing for sulfate ions |
Add dilute HCl (hydrochloric acid) and barium chloride solution, if a white precipitate of barium sulfate forms the original compound was a sulfate |
