# Problem: Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation:HydrocarbonFormulaHf(kJ/mol)1,3-ButadieneC4 H6 (g)111.91-ButeneC4 H8 (g)1.2n-ButaneC4 H10 (g)-124.7For 1-Butene calculate the molar enthalpy of combustion to CO2 (g) and H2 O(l).

###### FREE Expert Solution

We are asked to calculate the molar enthalpy of combustion to CO2 (g) and H2O(l) for 1-Butene

Note that we need to multiply each ΔH˚f by the stoichiometric coefficient since ΔH˚f is in kJ/mol.

Also, note that ΔH˚f for elements in their standard state is 0.

Balanced reaction:

C4H8(g) + 6 O2(g)→ 4 CO2(g) + 4 H2O(g)

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###### Problem Details
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation:

 Hydrocarbon Formula Hf(kJ/mol) 1,3-Butadiene C4 H6 (g) 111.9 1-Butene C4 H8 (g) 1.2 n-Butane C4 H10 (g) -124.7

For 1-Butene calculate the molar enthalpy of combustion to CO2 (g) and H2 O(l).