Answered by AI, Verified by Human Experts
This answer explains whether reactions are endothermic or exothermic based on bond strengths.Endothermic reactions occur when the bonds in the products are weaker than those in the reactants, resulting in heat being absorbed. On the other hand, exothermic reactions happen when the bonds in the products are stronger than those in the reactants, leading to heat being released. Based on the given reactions:1. A₂+ C₂ -> 2AC is exothermic.2. B₂ + C₂ > 2BC is exothermic.3. A + BC -> AB + C is endothermic.4. A₂ + B₂ -> 2AB is exothermic.5. AB + C -> AC + B is endothermic....