SUMMARY
The bond dissociation energy of Cl2 is definitively 58 kcal/mole, indicating that this energy is required to dissociate the molecule into two chlorine atoms (2 Cl). The reaction Cl2 → 2 Cl is endothermic, as it involves a positive enthalpy change (ΔH° = +58 kcal/mol), meaning heat is absorbed during the process. This clarification helps to distinguish between bond dissociation energy and entropy terms, which are often confused in discussions about thermodynamics.
PREREQUISITES
- Understanding of bond dissociation energy
- Basic knowledge of thermodynamics, specifically enthalpy and entropy
- Familiarity with chemical reaction notation
- Concept of endothermic vs. exothermic reactions
NEXT STEPS
- Study the concept of bond dissociation energy in detail
- Learn about enthalpy changes in chemical reactions
- Explore the differences between endothermic and exothermic reactions
- Review thermodynamic principles related to heat transfer in reactions
USEFUL FOR
Chemistry students, educators, and professionals interested in thermodynamics and chemical reaction dynamics will benefit from this discussion.