Given the thermochemical information:
∆Hoformation (H2O (liq) ) = − 285.8 kJ/mol
∆Hoformation (C2H2 (gas)) = − 26.7 kJ/mol
∆Hoformation (CO2 (gas) ) = − 393.5 kJ/mol

The molar heat of combustion of acetylene, C2H2 (gas), is closest to?

Question

Given the thermochemical information:   
            ∆Hoformation (H2O (liq) ) = − 285.8 kJ/mol    
            ∆Hoformation (C2H2 (gas)) = − 26.7 kJ/mol    
            ∆Hoformation (CO2  (gas) ) = − 393.5 kJ/mol

      The molar heat of combustion of acetylene, C2H2 (gas), is closest to?

sweetburger · Answer

|dw:1402076641963:dw|

do you know what the 2nd reactant in a combustion reaction is... it doesnt really matter for this equation anyway though