Given the Average Bond Energies Listed Below, Estimate D H

question 91

Multiple Choice

Given the average bond energies listed below, estimate D H for the following reaction:
H₂ (g) + Cl₂ (g) →2 HCl (g) D H _rxn = ??
Average Bond Energies:
H - H₄36 kJ/mol Cl - Cl₂42 kJ/mol H - Cl 431 kJ/mol

• A) +184 kJ
• B) - 184 kJ
• C) - 246 kJ
• D) +246 kJ
• E) none of these

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