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1 markFunctional Group Analysis, Reactions and Mechanisms

CAPE Chemistry Unit 2 · 2009 · Paper 2 · Question 1(c)(iv)

Production of azo dyes from phenylamine.

State the colour of the azo dye when phenol is used in Stage IV.

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Other parts of this question

  1. 1(a)(i)Draw the structural formula for intermediate X in the reaction scheme.[1 mark]
  2. 1(a)(ii)State the condition required for Stage I.[1 mark]
  3. 1(a)(iii)State the reagent required for Stage II.[1 mark]
  4. 1(b)(i)Write a general equation showing the basic property of phenylamine.[2 marks]
  5. 1(b)(ii)a)State whether phenylamine is more basic or less basic than ammonia.[1 mark]
  6. 1(b)(ii)b)Explain your answer in terms of availability of lone pairs and hydrogen bonding.[4 marks]
  7. 1(c)(i)Write the formula of intermediate Y.[1 mark]
  8. 1(c)(ii)State the reagents and condition required for Stage III.[2 marks]
  9. 1(c)(iii)Name the reagent used to dissolve the phenol in Stage IV.[1 mark]

More practice: the rest of this paper · more Functional Group Analysis, Reactions and Mechanisms questions · all CAPE Chemistry Unit 2 past papers