Answer;
A bond is formed, and the reaction is exothermic.
Explanation;
- An endothermic reaction takes more energy to break the bonds of the reactants than is released when the bonds of the products are formed.
- Chemical bond formation is always an exothermic process and chemical bond breaking is an endothermic process. When bonds are formed the system loses energy and hence increases its stability.
- In this case; Cl + Cl —> Cl2 + 58 kcal ; bond between two Cl atoms are being formed and thus the reaction is exothermic as it releases energy to the surrounding.
