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Edexcel A-Level Chemistry 9CH0
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Inorganic Chemistry and the Periodic Table
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Inorganic Chemistry and the Periodic Table
Testing for halide ions with silver nitrate
- 3 things to know
- Papers 1 and 3
Overview
The white, cream and yellow silver halide precipitates and the ionic equation for silver bromide, their solubility in dilute and concentrated ammonia and the diamminesilver(I) complex, why the sample is acidified with dilute nitric acid rather than hydrochloric acid, and identifying an unknown halide from the results.
What you need to know
Answer each one before you reveal it.
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Key term
What colour precipitate forms when aqueous silver nitrate is added to a solution containing chloride ions?
Key term
In what concentration of ammonia solution does silver chloride dissolve?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What colour precipitate forms when aqueous silver nitrate is added to a solution containing chloride ions?
Model answer
White precipitate (AgCl).
- 2
In what concentration of ammonia solution does silver chloride dissolve?
Model answer
Dilute ammonia solution.
- 3
In what concentration of ammonia solution does silver bromide dissolve?
Model answer
Concentrated ammonia solution (not dilute).
- 4
Does silver iodide dissolve in ammonia solution?
Model answer
No, silver iodide does not dissolve in ammonia solution of any concentration.
- 5
What colour precipitate forms when aqueous silver nitrate is added to a solution containing bromide ions?
Model answer
A cream precipitate of silver bromide, AgBr.
- 6
What colour precipitate forms when aqueous silver nitrate is added to a solution containing iodide ions?
Model answer
A yellow precipitate of silver iodide, AgI.
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