What Is the Enthalpy of Reaction D H ° _rxn

question 62

Multiple Choice

What is the enthalpy of reaction D H ° _rxn for the following reaction?
2 C₂H₆ (g) + 7 O₂ (g) →4 CO₂ (g) + 6 H₂O (g) D H ° _rxn = ??
D H ° _f(C₂H₆) = - 84.7 kJ/mol D H ° _f(CO₂) = - 393.5 kJ/mol D H ° _f(H₂O) = - 241.8 kJ/mol

• A) - 3194.2 kJ/mol
• B) - 2855.4 kJ/mol
• C) - 1674.9 kJ/mol
• D) - 1646.4 kJ/mol
• E) - 550.6 kJ/mol

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