Calculate the Enthalpy for the Combustion of Propane Shown Using

question 60

Multiple Choice

Calculate the enthalpy for the combustion of propane shown using the given bond dissociation energies:
C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂O
Number and types of bonds in each molecule:
C₃H₈ (2 C-C,8 C-H bonds) ;O₂ (1 O=O) ; (2 C=O bonds) ; (2 O-H bonds) .
Bond dissociation energies:
C-C (347 kJ/mol) ;C-H (413 kJ/mol) ;O=O (498 kJ/mol;C=O (799 kJ/mol) ;O-H (467 kJ/mol)

• A)-1962 kJ
• B)1962 kJ
• C)-2042 kJ
• D)-50 kJ
• E)-1242 kJ

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