Question

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WRITE ONE EQUATION EACH FOR DECOMPOSITION REACTIONS WHERE ENERGY IS SUPPLIED IN THE FORM OF HEAT,LIGHT OR ELECTRICITY.








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Answer 1

Thermal decomposition is a chemical reaction where a single substance breaks into two or more simple substances when heated.

CaCO3⟶(heat) CaO+CO2

Photo decomposition is a chemical reaction in which a substance is broken down into simple substances by exposure to light (photons).

2H2O2⟶(sunlight) 2H2O+O2

Electrolytic decomposition may result when the electric current is passed through an aqueous solution of a compound.

2H2O(l) → (electricity) 2H2(g)+O2(g)

Hope it's helpful... ^_^

Answer 2

Decomposition reaction :

A decomposition reaction is a chemical reaction in which one reactant breaks down into one or more products. They can be either endothermic or exothermic.

AB => A + B

Some examples of decomposition reaction are :

• CaCO3 => CaO + CO2

On heating calcium carbonate, it decomposes into calcium oxide and carbon dioxide.

• 2H2O => 2H2 + O2

During the electrolysis of water, the water compound breaks down into hydrogen gas and oxygen gas.