Given the Bond Enthalpies C =C (611),C C (837),H-H (436),C-H

question 51

Multiple Choice

Given the bond enthalpies C =C (611) ,C C (837) ,H-H (436) ,C-H (414) all in kJ/mol,estimate ΔH° for the following reaction:
C₂H₂(g) + H₂(g) → C₂H₄(g) .

• A)-60 kJ/mol
• B)-166 kJ/mol
• C)-994 kJ/mol
• D)+166 kJ/mol
• E)98 kJ/mol

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