We begin with the unbalanced combustion reaction of methanol:
CH3OH(l) + O2(g) → CO2(g) + H2O(l)
Calculating the number of elements in reactants and products:
C 1 1
H 4 2
O 3 3
Write a balanced equation for the combustion of methanol.
Calculate ΔH°rxn at 25°C.
Calculate ΔS°rxn at 25°C.
Calculate ΔG°rxn at 25°C.