Question

Explain and give two examples each for decomposition reactions where energy is supplied in the form of heat, light or electricity. ​

Answer 1

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10th

Chemistry

Chemical Reactions and Equations

Types of chemical reactions

Write one equation each for...

CHEMISTRY

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

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VIDEO EXPLANATION

ANSWER

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

CaCO

3

⟶

Heat

CaO+CO

2

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

2H

2

O

2

⟶

sunlight

2H

2

O+O

2

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

2H

2

O(l)

⟶

electricity

2H

2

(g)+O

2

(g)

Answer 2

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Decomposition reaction requiring heat is known as thermal decomposition.

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

CaCO 3⟶Heat CaO+CO²