Question

why decomposition reaction considered as endothermic reaction​

Answer 1

Decomposition reactions are usually endothermic because they involve breaking of bonds. Breaking bonds requires an input of energy, while forming bonds releases energy. ... But there are decomposition reactions which are exothermic like decomposition of hydrogen peroxide.

Answer 2

Answer:

Decomposition reactions are usually endothermic because they involve breaking of bonds. Breaking bonds requires an input of energy, while forming bonds releases energy. ... But there are decomposition reactions which are exothermic like decomposition of hydrogen peroxide.

★ decomposition is a chemical reaction where a single substance breaks into two or more simple substances when heated. The reaction is usually endothermic because heat is required to break the bonds present in the substance.