Liquid ethanol can be oxidized completely in air according to
C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l)
The following thermochemical data are provided:
(a) Using Reactions 1–3, calculate the standard molar enthalpy change for the complete oxidation of one mole of liquid ethanol. Express your answer to three significant figures.
(b) An engineer claims that doubling each stoichiometric coefficient in the ethanol combustion equation would double the numerical value of the enthalpy change you obtained in part (a). Evaluate the validity of this claim and explain your reasoning.