Enthalpy of formation questions, help please!?

Write reactions for which the enthalpy change will be: 1) enthalpy of formation for aluminum oxide, 2) standard enthalpy for combustion of liq ethanol C2H5OH, 3) standard enthalpy of neutralization of NaOH by HCl, 4) enthalpy of formation for gaseous vinyl chloride C2H3Cl, 5) the enthalpy of combustion of liquid... show more Write reactions for which the enthalpy change will be: 1) enthalpy of formation for aluminum oxide, 2) standard enthalpy for combustion of liq ethanol C2H5OH, 3) standard enthalpy of neutralization of NaOH by HCl, 4) enthalpy of formation for gaseous vinyl chloride C2H3Cl, 5) the enthalpy of combustion of liquid benzene C6H6, 6) the enthalpy of solution of solid ammonium bromide.

I am not cheating, just needing help :) Thanks!
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