Question

define exothermic reaction??​

Answer 1

$<p style ="Color:cyan; font-family: cursive; background:black;font size25px;"> An exothermic reaction is a reaction in which energy is released in the form of light or heat. Thus in an exothermic reaction, energy is transferred into the surroundings rather than taking energy from the surroundings as in an endothermic reaction. In an exothermic reaction, change in enthalpy ( ΔH) will be negative.$

Answer 2

Explanation:

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

Examples of Exothermic Reactions

1. any combustion reaction.
2. a neutralization reaction.
3. rusting of iron (rust steel wool with vinegar)
4. the thermite reaction.
5. reaction between water and calcium chloride.
6. reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
7. reaction between potassium permanganate and glycerol.