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4 marksQualitative Analysis

CSEC Chemistry · January 2005 · Paper 2 · Question 5(b)(iii)

Describe the observations expected from tests (i) – (iv) in Table 2. Observations from: (iii) Damp blue litmus with gas from sodium sulphite.

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Other parts of this question

  1. 5(a)(i)Write balanced equations for the reactions between hydrochloric acid and sodium sulphite.[2 marks]
  2. 5(a)(ii)Write balanced equations for the reactions between hydrochloric acid and sodium carbonate.[2 marks]
  3. 5(a)(iii)State ONE effect that the products from these two reactions could have on the environment.[1 mark]
  4. 5(b)(i)Describe the observations expected from tests (i) – (iv) in Table 2. Observations from: (i) Acidified potassium manganate (VII) with gas from sodium sulphite.[4 marks]
  5. 5(b)(ii)Describe the observations expected from tests (i) – (iv) in Table 2. Observations from: (ii) Aqueous calcium hydroxide with gas from sodium carbonate.[4 marks]
  6. 5(b)(iv)Describe the observations expected from tests (i) – (iv) in Table 2. Observations from: (iv) Damp blue litmus with gas from sodium carbonate.[4 marks]
  7. 5(c)With reference to the gas produced when hydrochloric acid reacts with sodium sulphite, account for the observed changes in the acidified potassium manganate…[3 marks]
  8. 5(d)Draw a diagram of the apparatus to show how the products formed from observation (b) (ii) could be separated.[3 marks]

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