Question

define decomposition reaction??

Answer 1

A decomposition reaction is a type of chemical reaction where one reactant yields two or more products. The general form for a decomposition reaction is. AB → A + B. Decomposition reactionsare also known as analysis reactions or a chemical breakdown.

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

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Answer 2

Hello friends!!

Here is your answer :

✔️Decomposition reaction :-

A reaction in which a single reactant breaks down to form two or more simpler products is called decomposition reaction.

This reaction is opposite to combination reaction.

For example,

▶️2Pb(NO3) 2 - - - - > 2PbO + 4NO2 + O2

✡️✡️On the basis of the form of energy required for the reaction, these reactions are of three types:

(a) THERMAL DECOMPOSITION

These reactions use the energy in the form of heat for decompositions of the reactant. For example,

▶️CaCO3 - - - - > CaO + CO2

(b) ELECTROLYSIS

These reactions involve the use of electrical energy for the decomposition of the reactant molecules.

These type of decomposition can be used extract several metals from their natural occurring compounds.

For example,

▶️2H2O - - - - - - > 2H2 + O2


(c) PHOTOLYSIS OR PHOTOCHEMICAL DECOMPOSITION

These reactions involve the use of light energy for the purpose of decomposition.

For example,

▶️ 2AgCl - - - - - > 2Ag + Cl2


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