How would I test for the following ions?
Ammonium ion
Iron(II) ion
Zinc ion
Ammonium ion
Iron(II) ion
Zinc ion
1 Answer
How about these?
Explanation:
Testing for
The test
Add sodium hydroxide solution to the test solution and heat gently.
If ammonium ions are present, ammonia gas will be given off.
Confirmation
Ammonia has a characteristic sharp, choking smell.
It makes damp red litmus paper turn blue.
It forms a white smoke of ammonium chloride on exposure to hydrogen chloride gas from a drop of concentrated hydrochloric acid on a glass stirring rod.
Testing for
The test
Add sodium hydroxide solution to the test solution.
You will get a dark green precipitate if
Confirmation
Add a few drops of potassium hexacyanoferrate(III).
Testing for
The test
Add a few drops of sodium hydroxide solution to the test solution.
You will get a white precipitate if
Confirmation
Add excess sodium hydroxide solution. The precipitate will dissolve.