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3 marksAcid/Base Equilibria

CAPE Chemistry Unit 1 · 2006 · Paper 2 · Question 3(a)

A student synthesizes a crude organic product in the laboratory. The process of purification is outlined in the flow diagram in Figure 1 below.

Identify EACH of the processes 1, 2 and 3 in Figure 1.

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Other parts of this question

  1. 3(b)(i)Suggest the name of Solvent A and explain why the solvent suggested is suitable.[3 marks]
  2. 3(b)(ii)Describe Mixture B[1 mark]
  3. 3(c)(i)Suggest a suitable piece of equipment which could be used to obtain the extracted product[1 mark]
  4. 3(c)(ii)Suggest a suitable piece of equipment which could be used to obtain the dry crystals.[1 mark]
  5. 3(d)Mixture B shows some discolouration and an additional step is required before Process 2. Name the purifying agent necessary in this step.[1 mark]

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