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6. What is the test for chlorides?

  • Add dilute hydrochloric acid and barium chloride to the solution. If a white precipitate of barium chloride forms, the original was a chloride
  • dd chlorine and water and if it begans to smoke and fizz it was a chloride
  • Add dilute nitric acid and silver nitrate solution and if a white precipitate of silver chloride forms, the original was a chloride.
  • Add citric acid and lead chloride solution and if it changes colour from clear to red it was a chloride

7. Name all of the insoluble substances (including exceptions)

  • nitrates, sulfates and salts
  • Silver and lead chlorides, lead, barium and calcium sulfates and carbonates and hydroxides
  • chlorides, sulfates, nitrates and salts of sodium, potassium and ammonium
  • sodium, potassium and ammonium carbonates and hydroxides

8. Name all of the soluble substances (excluding exceptions)

  • lead, barium and calcium sulfates
  • chlorides, sulfates, nitrates and salts of sodium, potassium and ammonium
  • carbonates and hydroxides
  • silver and lead chlorides

9. What colours do potassium and sodium metals create during a flame test?

  • potassium = purple and sodium = yellow/orange
  • potassium = blue and sodium = red
  • potassium = green and sodium = purple
  • potassium = yellow and sodium = blue

10. What is the test for sulfates?

  • Add chlorine and water and if it begans to smoke and fizz it was a sulfate.
  • Add dilute hydrochloric acid and barium chloride to the solution. If a white precipitate of barium sulfate forms, the original was a sulfate.
  • Add dilute nitric acid followed by silver nitrate solution and if a white precipitate emerges, it was a sulfate originally.
  • Add citric acid and lead chloride solution and if it changes colour from clear to red it was a sulfate.