Qualitative Tests for Ions Flashcards
What test would you conduct to see if a carbonate is present ?
Add a Few drops of dilute nitric acid
What would you observe if a carbonate is present ?
Effervescence due to carbon dioxide gas
What test would you conduct to see if sulfate ions are present ?
Add a equal volume of aqueous barium nitrate
What would you observe if sulfat ions are present ?
A white precipitate of barium sulfate
What test would you carry out to see if chloride ions are present ?
Add a equal volume of aqueous silver nitrate
What would you observe if chloride ions are present ?
A white precipitate of silver chloride ( soluble in dilute ammonia solution )
What test would you carry out to see if bromide ions are present ?
Add a equal volume of aqueous silver nitrate
What would you observe if bromide ions are present ?
A cream precipitate of silver bromide ( soluble in concentrated ammonia solution )
What test would you carry out to see if iodide ions are present ?
Add a equal volume of aqueous silver nitrate
What would you observe if the test for iodide ions was positive ?
A yellow precipitate of silver iodide ( insoluble in dilute and concentrated ammonia solution )
What test would you conduct to see if ammonium ions are present ?
Warm with dilute sodium hydroxide and test any gas given off with damp red litmus paper
What would you observe if the test for ammonium ions was present ?
Gas turns red litmus paper blue
