Why are decomposition reaction called opposite of combination reaction?
Answers
Answer: In a combination reaction two or more substances are combined to form new substance while in the decomposition reaction one substance decomposes into two or more substances. Hence, the decomposition reactions are called opposite of combination reactions.
Answer: Combination reaction may be defined as the reaction in which two or more substances combine under suitable condition to form a new substances with new properties.
eg. 2H2 (g) + O2 (g) ------------> 2H2O (l)
A decomposition reaction may be defined as the reaction in which a single substance decomposes or splits into two or more substances under suitable conditions.
eg. 2H2O (l) ------------> 2H2 (g) + O2 (g)
It baby concluded that a certain substance is formed or synthesized in combination reaction and It breaks or splits in decomposition reaction.
Therefore, two reactions oppose each other.