Using the bond energies from the table below estimate ∆H for the following reaction C2H2(g) +...

Question

Question

Using the bond energies from the table below estimate ∆H for the following reaction

C₂H₂(g) + H₂(g) → C₂H₄(g)

C-H (413), H-H (436), C-C (348), C=C (614), C≡C (839)

A) +165 kJ/mol

B) -390. kJ/mol

C) +390. kJ/mol

D) –124 kJ/mol

E) –165 kJ/mol

science chemistry

Answer 1

Answer #1

& H H-CEC-H H > H G =(- lt H - Et bonds formed) Alt = {H. (bonds broken) Bonds broken 2(c-H) = 2x413 = 826 le=c) = 1x839 = 83

Answer 2

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