Given the Data Below, What Approximately Is D H for the Reaction

question 16

Multiple Choice

Given the data below, what approximately is D H for the reaction?
H₂ (g) + C₂H₄ (g) →C₂H₆ (g) Average Bond Energies:
H - H₄36 kJ/mol C - H₄14 kJ/mol C=C₆11 kJ/mol C - C₃48 kJ/mol

• A) - 490 kJ
• B) - 392 kJ
• C) +281 kJ
• D) - 129 kJ
• E) none of these

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