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1 markEnergetics

CAPE Chemistry Unit 1 · 2006 · Paper 1 · Question 3(b)(i)

State Hess' Law.

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  1. 3(a)Define the term 'enthalpy change of solution'.[1 mark]
  2. 3(b)(ii)Use the data in Table 2 and apply Hess' Law to determine the enthalpy of solution of hydrogen fluoride gas.[5 marks]
  3. 3(b)(iii)Any chemical change involves processes of bond making and bond breaking. Classify EACH process as exothermic or endothermic and, hence, explain the value…[3 marks]

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