Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

The outcomes of two tests carried out on aqueous compound X are shown. When it is warmed with aluminium foil and aqueous sodium hydroxide, ammonia is given off. With aqueous sodium hydroxide, a brown precipitate forms. What is X?

  • Airon(III) nitrate
  • Biron(II) nitrate
  • Ciron(III) sulfate
  • Diron(II) sulfate

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