Quelpr
4 marksEnergetics

CAPE Chemistry Unit 1 · 2013 · Paper 2 · Question 4(d)

Distinguish between 'exothermic enthalpy change' and 'endothermic enthalpy change', citing enthalpy changes from your Born-Haber cycle in (c) to support your answer.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 4(a)Define the term 'standard enthalpy of formation'.[2 marks]
  2. 4(b)Write a balanced equation for formation of CaO(s).[1 mark]
  3. 4(c)Construct a Born-Haber cycle for the formation of CaO(s) showing clearly, using equations, the steps of the enthalpy changes involved.[6 marks]
  4. 4(e)Explain, by writing an equation, how the data from the Born-Haber cycle can be used to calculate the lattice energy of CaO(s).[2 marks]

More practice: the rest of this paper · more Energetics questions · all CAPE Chemistry Unit 1 past papers