Bond dissociation energy data
N–N (triple bond) = 945 kJ / mol
H–H = 436 kJ / mol
N–H = 391 kJ / mol
OPTIONS:
1538 kJ
−769 kJ
−93 kJ
113 kJ
2 Answers
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Reactants: N triple bond N = 945
H-H = 436 x 3 = 1308
Total reactant bond energy = 2253 kJ
Products: N-H = 391 x 3 = 1173 x 2 = 2346 kJ total for products
2253 - 2346 = -93 kJ
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