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3 marksOrganic Chemistry - An Introduction

CSEC Chemistry · January 2009 · Paper 2 · Question 6(b)(ii)

Most dyes are classified as direct dyes or mordant dyes.

Suggest why mordant dyes are used when dyeing cotton fabrics.

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Other parts of this question

  1. 6(a)(i)Name TWO types of glass used in and around the home.[2 marks]
  2. 6(a)(ii)Identify the MAIN components for ONE of the types of glass named in (a)(i) above.[2 marks]
  3. 6(a)(iii)a)State ONE property of EACH of the two types of glass named in (a) (i) above.[4 marks]
  4. 6(a)(iii)b)Relate the property to the use of the type of glass.[1 mark]
  5. 6(b)(i)Compare the mode of action of direct dyes to that of mordant dyes.[3 marks]
  6. 6(b)(iii)Suggest a fabric for which direct dyeing can be used.[1 mark]

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