Applications of Hess's law

• Define Hess's Law

  If a reaction can occur by more than one route, the overall enthalpy change is independent of the route taken
• Describe how to find ∆H for a reaction when ∆Hf for all reactants and products is known

  ∆H = (sum of ∆Hf products) - (sum of ∆Hf reactants)