Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

A mixture releases a gas both on reaction with an acid and on reaction with an alkali. Which ions are present in this mixture?

  • Aammonium ions and carbonate ions
  • Bammonium ions and oxide ions
  • Chydrogen ions and carbonate ions
  • Dhydrogen ions and oxide ions

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