Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

Some test outcomes for an aqueous solution of substance X are given below. 1. When aqueous silver nitrate is added, a cream precipitate forms. 2. On addition of aqueous sodium hydroxide, a green precipitate is obtained, and this dissolves in excess alkali. 3. When aqueous ammonia is added, a green precipitate forms, and it remains insoluble in excess ammonia. Which substance is X?

  • Achromium(III) bromide
  • Bchromium(III) chloride
  • Ciron(II) bromide
  • Diron(II) chloride

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