Quelpr
3 marksFirst Row Transition Elements

CAPE Chemistry Unit 1 · May/June 2024 · Paper 2 · Question 3(c)(ii)

Write an equation for the reaction which occurs between aqueous copper(II) ions and concentrated hydrochloric acid, and identify the species with the higher Kstab (stability constant) value.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)(i)Write the formulae of the oxides of the elements of the third period, from sodium to sulfur.[3 marks]
  2. 3(a)(ii)Explain the difference in the oxidation number in the oxides of sodium and aluminium.[3 marks]
  3. 3(a)(iii)a)State the type of bond present in magnesium chloride.[1 mark]
  4. 3(a)(iii)b)State the type of bond present in silicon chloride.[1 mark]
  5. 3(a)(iii)c)State the type of bond present in phosphorus(III) chloride.[1 mark]
  6. 3(a)(iv)With the aid of an equation, describe the reaction of silicon chloride in water.[4 marks]
  7. 3(b)(i)Define the term 'ligand'.[2 marks]
  8. 3(b)(ii)Write the formula of the complex formed between X^3+ and six hydroxide ligands.[1 mark]
  9. 3(b)(iii)State the shape of the complex formed.[1 mark]
  10. 3(b)(iv)Using a suitable diagram, illustrate your answer in (b)(iii).[2 marks]
  11. 3(b)(v)State what is meant by the term 'coordination number', in reference to a complex ion.[2 marks]
  12. 3(c)(i)State the expected observation for the addition of concentrated hydrochloric acid to aqueous copper(II) sulfate.[2 marks]
  13. 3(d)(i)Describe the changes which occur at the end point of the titration.[2 marks]
  14. 3(d)(ii)Write the formula and state the colour of the species formed from the oxidation of Fe^2+ ions.[2 marks]

More practice: the rest of this paper · more First Row Transition Elements questions · all CAPE Chemistry Unit 1 past papers