Question

what is endothermic and exothermic reaction ?

Answer 1

The reactions in which energy is absorbed are called endothermic reactions and the reactions in which the energy is released are called exothermic reactions .

Answer 2

Answer :

Endothermic reaction : It is a type of chemical reaction where the energy is absorbed from the surrounding. In the endothermic reaction, the reactant are less than the energy of product.

In endothermic reaction, the change in enthalpy is, positive

Exothermic reaction : It is a type of chemical reaction where the energy is released into the surrounding. In the exothermic reaction, the energy of reactant are more than the energy of product.

In exothermic reaction, the change in enthalpy is, negative

The endothermic and exothermic reaction graph are shown below.