Use the reaction and bond information to answer the question.
C2H6 > C2H4 + H2
Reactant bond energies: H–C = 413 kJ/mol, C–C single bond = 347 kJ/mol
Product bond energies: H–C = 413 kJ/mol, C=C double bond = 614 kJ/mol, H–H = 432 kJ/mol
Based on the bond energies, is this reaction endothermic or exothermic? Why or why not?
A) The reaction is endothermic, because stronger bonds are broken than formed.
B) This reaction is exothermic, because stronger bonds are broken than formed.
C) The reaction is exothermic, because stronger bonds are formed than broken.
D) The reaction is endothermic, because stronger bonds are formed than broken
