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6. What are the observations for the sulphate reaction?

  • Dissovles
  • Barium sulphate precipitate in a colourless solution
  • Fizzes as co2 gas given off
  • Barium sulphate precipitate in a blue solution

7. What do u add to dissolve the chloride precipitate ?

  • Barium nitrate
  • Excess silver nitrate
  • Dilute ammonia
  • Concentrated ammonia

8. What do u add to a solution to test for carbonate ions?

  • Sodium hydroxide
  • Barium nitrate
  • Dilute acid
  • Silver nitrate

9. How do you test for an ammonium ion?

  • Add a dilute acid
  • Gently heat
  • Add sodium hydroxide and gently heat
  • Add sodium hydroxide

10. What do you add to a solution to test for sulphate ions?

  • Silver sulphate
  • Barium nitrate
  • Barium sulphate
  • Silver nitrate