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3 marksPrinciples of Chemical Equilibrium

CAPE Chemistry Unit 1 · 2007 · Paper 2 · Question 6(b)(i)

Carbon monoxide, CO, formed from the incomplete combustion of fossil fuels, poses no threat to vegetation but is extremely toxic to humans at high concentrations.

Using the information in Figure 1, account for the toxic effect of carbon monoxide at high concentrations.

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Other parts of this question

  1. 6(a)(i)Define the term 'ligand' and identify two ligands in the haemoglobin structures in Figure 1.[4 marks]
  2. 6(a)(ii)State and explain the principle on which the reaction in Figure 1 is based.[2 marks]
  3. 6(b)(ii)Suggest a treatment for a patient suffering from overexposure to carbon monoxide and give a reason for your suggestion.[2 marks]
  4. 6(c)Account for the origin of colour in transition metal complexes.[4 marks]

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