halide test

• Process:

  • silver nitrate is acidified with HNO3 before sample of halide solution is added - this prevents a silver oxide forming and because there are already NO3 ions present
  • try first with dilute ammonia and then with concentrated ammonia
• chloride

  • white precipitate
  • dissolves in dilute ammonia
• bromide

  • cream precipitate
  • dissolves in concentrated ammonia
• iodide

  • pale yellow precipitate
  • insoluble in ammonia