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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.