Question

Bond Bond Energy(kJ/mol)
H-I 297
H-H 435
I-I 151


Hydrogen and iodine gases react to produce hydroiodic acid according to the reaction.
H2 + I2-> 2HI
How much total bond energy in kJ/mol is in the products of the reaction?

594
453
448
297

Answers

GPT-5 mini
Each HI has one H–I bond (bond energy 297 kJ/mol). For 2 HI: 2 × 297 = 594 kJ/mol.

Answer: 594.