Chemistry 5070 · O Level · Identification of ions and gases

Identification of ions and gases — practice question

Compound Q dissolves in water. If dilute sulfuric acid is added to a solution of Q, a white precipitate is formed. On heating Q with aqueous sodium hydroxide and aluminium foil, a gas is evolved that turns damp red litmus paper blue. What is Q?

  • Aammonium chloride
  • Bammonium nitrate
  • Cbarium chloride
  • Dbarium nitrate

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