C3 - Analysing Substances - Anion tests

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1. What would a carbonate produce when reacted with dilute acid?

  • Carbon dioxide and calcium oxide
  • Water and Carbon dioxide
  • Water and limestone
  • Carbon dioxide and Limestone
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2. What colour precipitate would form for Cl,Br and I?

  • Cl-white, Br-green, I-brown
  • Cl-white , Br-cream , I-yellow
  • Cl-cream, Br-green, I-white
  • Cl-yellow, Br-cream, I-white

3. What would be the result of a sulphate test?

  • White Barium sulphate precipitate would form
  • Cream Chlorine sulphate would form
  • Carbon dioxide would be produced (turns limewater cloudy)
  • Yellow Iodine sulphate would form

4. How would you test for sulphate ions?

  • Flame test
  • Add sodium hydroxide
  • Add Barium chloride (in presence of dilute HCL)
  • react with dilute acid

5. What is the charge of Anions?

  • Negative
  • Positive
  • No charge
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