The Student Room Group
Reply 1
This may be a little late but
The formula for propan-2-ol is C3H5OH right and the enthalpy of combustion of propan-2-ol i assume is given
The enthalpy of combustion for both C and H2 are in the data booklet
So with this information you can work out the enthalpy of formation of propan-2-ol using Hess' law
Reply 2
thanks for help. it was the multiplying and rearanging the equations i struggled with. ended up with 0 marks for quesion despite doing lots of working!