Question

Explain Endothermic,Exothermic reaction ​

Answer 1

Endothermic reactions :

chemical reactions in which the reactants absorb heat energy from the surroundings to form products. ... When a chemical bond is broken, it is usually accompanied by a release of energy.

exothermic reaction:

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

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$\huge\sf{\underline{Endothermic \: reaction:}}$

• An endothermic process is any process with an increase in the enthalpy H of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.

$\huge\sf{\underline{Exothermic \: reaction:}}$

• An exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." Exothermic reactions usually release heat and entail the replacement of weak bonds with stronger ones.