Question

what is exothermic reaction??????​

Answer 1

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A reaction in which heat energy is released Is known as exothermic reaction.

e.g carbon dioxide react with oxygen and form carbon dioxide and release heat .

Answer 2

An exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy. Exothermic Reaction means "exo" meaning releases and "thermic" means heat.