Basically, whenever something is burned in excess oxygen, particularly for hydrocarbons and alcohols, it basically signals that the chemical combustion reaction is complete, which means the only products of this reaction is just water and carbon dioxide. So it is a normal combustion equation with ethanol and oxygen as reactants, and carbon dioxide and water as products. Hope this helps
Where's the question from? Seems pretty silly to do it like that.
I suppose you could show an equation of incomplete combustion and say that it produces soot/CO/H2O and then show an equation of complete combustion and say that it produces CO2/H2O but make sure it's clear which one actually occurs.