IGCSE Chemistry Extended 12.5.1—Anion tests Topic Practice

• Describe anion tests: carbonate + dilute acid then CO2 test; halides (Cl-/Br-/I-) acidified with dilute HNO3 then aqueous AgNO3; nitrate with Al foil + aqueous NaOH then NH3 test; sulfate acidified with dilute HNO3 then aqueous Ba(NO3)2; sulfite with acidified KMnO4