# How do you calculate the DeltaH for the combustion of C_2H_5OH?

Nov 28, 2016

${C}_{2} {H}_{5} O H \left(l\right) + 3 {O}_{2} \left(g\right) \rightarrow 2 C {O}_{2} \left(g\right) + 3 {H}_{2} O \left(l\right) + \Delta$
This is NOT calculated, but measured. Of course, if you have certan parameters, i.e. $\Delta H {\text{^@}}_{f}$ for the reactants and products (you have for ONE of the reactants, which?), you can do an enthalpy summation, but at present you cannot find the enthalpy parameters for the given reaction.