Question

What is Exothermic Reaction?

Answer 1

Exothermic reaction is any chemical reaction in which energy is released . This energy can either be in the form of heat or light . "Exo" means move out and "Therm" means heat. So , any reaction in which heat is moved out is exothermic .

A very common example of exothermic reaction is combustion . In combustion , energy is released both in the form heat and light .

This can be concluded as :

Reactant $\longrightarrow$ Product + Energy

Endothermic reactions are completely opposite to exothermic reactions . In these , energy is consumed . For example : melting of ice , evaporation . "Endo" means moved in and "Therm" means energy . Any reaction in which energy is utilised is endothermic reaction.

Endothermic reactions can be concluded as :

Reactant + Energy $\longrightarrow$ Product

Answer 2

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What is Exothermic Reaction ?

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Exothermic Reaction :-

The chemical reactions in which energy is released in the form of heat, light or any other form, are called Exothermic reaction.

Example :-

$CaO \: (s)+ H_{2}O \: (l) \implies Ca \: (OH) _{2} \: (aq) + Heat \\ \huge \boxed{(Slaking \: Of \: Lime)}$

$C_{6}H _{12}O _{6} (aq) + 6O_{2} \implies 6CO_ {2}(9) + 6H _{2}O \: (l) + Energy \: (atp) \\ \huge \boxed{ Respiration}$