Anion Test

Dilute acid was added to a solution.

A colourless gas which can turn limewater milky was formed.

The solution contains ________________.

• carbonate ion

• chloride ion

• nitrate ion

• sulfate ion

Dilute nitric acid and aqueous silver nitrate were added to a solution.

Yellow precipitate formed.

The solution contains ______________.

• chloride ion

• bromide ion

• iodide ion

• copper(II) ion

Dilute nitric acid and aqueous silver nitrate were added to a solution.

Cream precipitate formed.

The solution contains ______________.

• chloride ion

• bromide ion

• iodide ion

• copper(II) ion

Dilute nitric acid and aqueous silver nitrate were added to a solution.

White precipitate formed.

The solution contains ______________.

• chloride ion

• bromide ion

• iodide ion

• copper(II) ion

Dilute nitric acid and aqueous barium nitrate were added to a solution.

White precipitate formed.

The solution contains ______________.

• chloride ion

• bromide ion

• sulfite ion

• sulfate ion

Dilute hydrochloric acid was added to a solution. The mixture was heated gently.
The gas produced can turn KMnO4 solution colourless.

The solution contains ____________.

• sulfite ion

• sulfate ion

• carbonate ion

• nitrate ion

Aluminium foil and aqueous sodium hydroxide were added to a solution.

The mixture was heated and the gas produced can turn damp red litmus paper blue.

The solution contains ______________-.

• sulfate ion

• sulfite ion

• nitrate ion

• carbonate ion

A solution contains chloride ions.

Dilute nitric acid and aqueous silver nitrate were added to the solution.

Observation: ___________________.

• yellow precipitate formed

• white precipitate formed

• cream precipitate formed

• no reaction

A solution contains bromide ions.

Dilute nitric acid and aqueous silver nitrate were added to the solution.

Observation: ___________________.

• yellow precipitate formed

• white precipitate formed

• cream precipitate formed

• no reaction

A solution contains iodide ions.

Dilute nitric acid and aqueous silver nitrate were added to the solution.

Observation: ___________________.

• yellow precipitate formed

• white precipitate formed

• cream precipitate formed

• no reaction