O-LevelChemistryAcids, Bases & Salts5070/11 · May/June 2020 · Q41 Mark
Aluminium chloride is dissolved in water and the resulting solution is divided between three test-tubes. Which row gives the reagents for three tests which could be used to confirm the presence of aluminium chloride?
Atest-tube 1: aqueous sodium hydroxide, test-tube 2: aqueous ammonia, test-tube 3: dilute hydrochloric acid and aqueous silver nitrate
Btest-tube 1: aqueous sodium hydroxide, test-tube 2: dilute nitric acid and aqueous silver nitrate, test-tube 3: dilute hydrochloric acid
Ctest-tube 1: aqueous ammonia, test-tube 2: dilute nitric acid and aqueous silver nitrate, test-tube 3: nitric acid and barium nitrate
Dtest-tube 1: aqueous sodium hydroxide, test-tube 2: aqueous ammonia, test-tube 3: dilute nitric acid and aqueous silver nitrate
✓ Correct answer
D: test-tube 1: aqueous sodium hydroxide, test-tube 2: aqueous ammonia, test-tube 3: dilute nitric acid and aqueous silver nitrate
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