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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 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: C<sub>2</sub>H<sub>2</sub>(g) + H<sub>2</sub>(g) → C<sub>2</sub>H<sub>4</sub>(g) . A) -60 kJ/mol B) -166 kJ/mol C) -994 kJ/mol D) +166 kJ/mol E) 98 kJ/molC (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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