Question

Which of the following reactions isexothermic?a) H2(g)--------2H(g)b)C(s) ----------C(g)c) 2Cl(g)---------Cl2(g)d) H2O(s)---------H2O(l)​

Answer 1

The exothermic reaction among the given options is 2Cl(g)---------Cl2(g). This is because energy is released when a Cl2 molecule is formed.

Step-by-step explanation:

An exothermic reaction is a chemical reaction that releases heat. It is observed when the energy required to break the bonds in the reactants is less than the energy released when new bonds form in the products. Based on this, the reaction 2Cl(g)---------Cl2(g) is exothermic. This is because in the process of forming a Cl2 molecule, energy is released making the reaction exothermic.

Learn more about Exothermic Reactions

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