Question

Use bond energies to predict the molar enthalpy of combustion of acetylene gas.
2C2H2 + 5O2--> 4CO2 + 2H2O

I am confused as to how to do the 2C2H2 in relation to the bonds?

how many c-c bonds would there be, or would they be triple bonds?
The way I read it you break 4 C-H bonds, 1 CtriplebondC bond and 1 O-0 bond (on the reactant side) and form 8 C=O bonds, and 4 O-H bonds on the product side.

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Is the molar enthalpy of combustion of pentane the same as the molar enthalpy of formation of pentan... Calculate the enthalpy of combustion of acetylene(per mol acetylene)using bond enthalpies and energy... For the combustion of acetylene: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g) ΔH = -2511 kJ What i...