Qualitative Analysis (1)

Carbonate ion test

Reactants: Dilute acid; Result: Gas turns limewater cloudy

Chloride ion test

Reactants: Dilute nitric acid + Argentum nitrate; Result: White precipitate

Sulphate ion test

Reactants: Dilute hydrochloric acid + Barium chloride; Result: White precipitate

Nitrate ion test

Reactants: Dilute sulphuric acid + Iron(II) sulfate + Concentrated sulphuric acid; Result: Brown ring

Colour of residue after heating: Black

Salt contains copper(II) ions

Colour of residue after heating: Brown

Salt contains iron(II) ions

Confirmation test for ammonium ion

Reactant: Nessler reagent; Result: Brown precipitate

Confirmation test for iron(II) ion

Reactant: Potassium hexacyanoferrate(III); Result: Dark blue precipitate

Qualitative analysis of a salt

Is a technique used to identify the cation and anion present in a salt by analysing its physical and chemical properties

Steps in the qualitative analysis of a salt (1)

Observation on the physical properties of the salt