Quelpr
1 markFunctional Group Analysis, Reactions and Mechanisms

CAPE Chemistry Unit 2 · 2013 · Paper 2 · Question 1(b)(i)b)

A student conducted tests to identify an unknown organic compound Z.

State the observation when 1.0 cm³ of Z is heated with acidified KMnO4, given the inference that Z reduces KMnO4.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Draw the chemical structures of the products formed at P from the alkaline hydrolysis of Compound X.[2 marks]
  2. 1(a)(ii)Draw the chemical structures of the products formed at Q from the transesterification reaction of Compound X with methanol and sodium hydroxide.[2 marks]
  3. 1(a)(iii)a)Identify the process which leads to the formation of the products at P.[1 mark]
  4. 1(a)(iii)b)Identify the process which leads to the formation of the products at Q.[1 mark]
  5. 1(a)(iv)a)State a use of the non-alcoholic product formed at P.[1 mark]
  6. 1(a)(iv)b)State a use of the non-alcoholic product formed at Q.[1 mark]
  7. 1(b)(i)a)State the observation when 1.0 cm³ of Z is treated with 2,4-DNPH, given the inference that Z is a carbonyl compound.[1 mark]
  8. 1(b)(i)c)State the inference when 1.0 cm³ of Z gives a silver mirror with Tollen's reagent.[1 mark]
  9. 1(b)(i)d)State the inference when 1.0 cm³ of Z shows no reaction with Fehling's solution.[1 mark]
  10. 1(b)(ii)Draw the likely chemical structure for Compound Z based on the observations in Table 1.[1 mark]
  11. 1(c)Outline the mechanism for the reaction between a carbonyl compound and HCN, using curved arrows to show electron movement.[2 marks]

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