Why Are Decomposition Reactions Called the Opposite of Combination Reactions? Write Equations for This Reaction

By K Balaji|Updated : November 9th, 2022

Decomposition reaction are called the opposite of combination reaction as in combination, one or more reactatns produce new products whereas in decomposition reaction a compound breaks to two or simpler compounds.

Combination reaction

  • This kind of reaction involves the interaction of one or more reactants to create brand-new products.
  • The following list provides a general explanation of a combo reaction:

X + Y → XY

Combination reaction illustration

Following is the chemical reaction:-

CaO(s) + H2O (l) → Ca(OH)2(aq)

Decomposition reaction

A decomposition reaction is one in which a substance splits into two or simpler components.

The following is a general description of a decomposition reaction:

XY → X + Y

Example of decomposition reaction

NaCl → Cl + Na

Applications of Decomposition reaction

Extraction of metals from their ores is a significant use of decomposition processes. For instance, by putting calamine through a breakdown reaction, zinc can be extracted. The same process can be used to make sodium from sodium chloride (NaCl).

Uses of Decomposition reaction

  1. manufacturing of calcium oxide or cement.
  2. Extraction of metals from their oxides, chlorides, etc. for metallurgical operations.
  3. the alleviation of dyspepsia caused by acid.
  4. Thermoplastic welding

As seen in the instances above, decomposition reactions are referred to as the opposite of combination reactions.

Summary:-

Why Are Decomposition Reactions Called the Opposite of Combination Reactions? Write Equations for This Reaction

As opposed to combination reactions, which result in the creation of new products from one or more reactants, decomposition reactions involve the breakdown of a chemical into two or simpler components.

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