Question

Why Combination reaction considered as opposite of Decomposition reaction ?Explain your answer with suitable example
​

Answer 1

Answer:

In a Combination reaction two or more substance are combined to form a new substance while in Decomposition reaction the substance decomposes into two or more substances. Hence combination reaction considered as the opposite of decomposition reaction.

Decomposition reaction = caco3- cao +co2

Combinations reaction = H2+cl2-Hcl

hope you understood

Answer 2

Answer:

when a single reactant decompose into 2 or more products.. this reaction is called as decomposition reaction.

for example-

 CaCO3----------> CaO + CO2