What is the enthalpy for C2H5OH + 3O2 > 2CO2 + 3H2O reversed?

Question

needs some help with this one... i keep getting 795.1... it doesnt list if the molecules are liquid, solid, or gas so im not sure on all the enthalpy values. I could really use someones help. Thanks in advance.

Answer 1

You should assume standard states. If I were you, I would mention this assumption in my answer.

Then use {products} - {reactants}, remember that they have swapped over products and reactants just to confuse you, and use standard enthalpies of formation, remembering to multiply by the number of moles in the balanced equation.

Then it's just arithmetic.