Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

The findings from several tests on an aqueous solution of substance X are shown below. 1. A cream precipitate forms when aqueous silver nitrate is added. 2. When aqueous sodium hydroxide is added, a green precipitate is formed that dissolves in excess alkali. 3. When aqueous ammonia is added, a green precipitate is formed that 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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