Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

The observations from two tests carried out on aqueous compound X are shown below. Test: warm with aluminium foil and aqueous sodium hydroxide → ammonia is produced Test: aqueous sodium hydroxide → brown precipitate What is X?

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

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