Question

How is an exothermic reaction and endothermic reaction described in a chemical equation

Answer 1

EXOTHERMIC: Any process where energy is released is called Exothermic reaction, it is represented with a negative sign.
Ex: All bond formation reaction is an exothermic reaction( H2+ o2-->h2o)
      All combustion reaction(c2h6 +o2-->co2+h2o)


ENDOTHERMIC: Any process where energy is absorbed is call endothermic reaction.
Ex: All bond breakage reaction is endothermic.(ozone formation)

Answer 2

Hello Dost ☺

Answer :

Exothermic reaction and endothermic reaction:

On the basis of energy changes during chemical reaction, they can be classified as

i) Exothermic reaction: A chemical reaction in which heat energy is produced.

Eg : C + O2 → CO2 (g) + heat

ii) Endothermic reaction: A chemical reaction in which heat energy is absorbed.

Eg : CaCO3 + Heat → CaO + CO2

Thanks ☺