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The Enthalpy of Combustion of Acetylene C2H2 Is Described by \rarr

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The enthalpy of combustion of acetylene C2H2 is described by
C2H2(g)+ (5/2)O2(g) \rarr 2CO2(g)+ H2O(l), Δ\Deltarxn= -1299 kJ/mol
Calculate the enthalpy of formation of acetylene, given the following enthalpies of formation
Δ\Deltaf[CO2(g)] = -393.5 kJ/mol
Δ\Deltaf[H2O(l)] = -285.8 kJ/mol

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