Anion Identification

Question 1

Chloride

Answer 1

Silver in an acidic solution forms a white ppte. AgCl dissolves in dilute ammonia.

Question 2

Bromide

Answer 2

Silver in an acidic solution forms a pale cream ppte. AgBr dissolves in concentrated ammonia.

Question 3

Iodide

Answer 3

Silver in an acidic solution forms a pale yellow ppte. Does not dissolve in ammonia. Lead forms bright yellow ppte.

Question 4

Hydroxide

Answer 4

Indicator test (Basic) or coloured ppte with transition metals

Question 5

Acetate

Answer 5

FeCl₃ forms a reddish brown solution that dissipates when dilute HCl is added.

Question 6

Carbonate

Answer 6

Basic (Higher pH), Nitric acid forms CO₂ turning limewater milky.

Question 7

Sulphate

Answer 7

Barium in acidic solution forms thick white ppte. Lead form white ppte.

Question 8

Phosphate

Answer 8

Barium in basic solution forms white ppte. Magnesium forms white ppte. In acidic solutions, ammonium molybdate forms yellow ppte.