Write One Equation Each For Decomposition Reactions Where Energy Is Supplied In The Form Of Heat, Light, Or Electricity.

What is a Decomposition Reaction?

A decomposition reaction is a type of chemical reaction in which a compound breaks down into two or more simpler substances. In this reaction, a single reactant undergoes a chemical change and produces multiple products.

The reaction is often initiated by the application of heat, light, electricity, or the presence of a catalyst. Decomposition reactions can occur in various forms, including:

• Thermal Decomposition
• Photo Decomposition
• Electrolytic Decomposition
• Catalytic Decomposition

Decomposition reactions play a crucial role in processes such as digestion, decay of organic matter, photosynthesis, and many industrial applications.

Solution

• Decomposition With Heat (Thermal Decomposition)

Decomposition with heat, also known as thermal decomposition, is a type of decomposition reaction that occurs when a compound is exposed to heat, resulting in its breakdown into simpler substances. This reaction is driven by the energy supplied in the form of heat.

For Example: Calcium Carbonate (CaCO3) into Calcium Oxide (CaO) and Carbon Dioxide (CO2) when heated:

CaCO3 (s) → CaO (s) + CO2 (g)

• Decomposition With Light (Photo Decomposition)

Decomposition with light, also known as photo decomposition, is a type of decomposition reaction that occurs when a compound is exposed to light energy, typically in the form of ultraviolet (UV) or visible light. The absorption of light energy triggers the breakdown of the compound into simpler substances.

For Example: Hydrogen Peroxide (H2O2) into Water (H2O) and Oxygen (O2) when exposed to light:

2H2O2 (aq) → 2H2O (l) + O2 (g)

• Decomposition With Electricity (Electrolytic Decomposition)

Decomposition with electricity, also known as electrolytic decomposition, is a type of decomposition reaction that occurs when an electric current is passed through a compound or an electrolyte solution. The electrical energy provided by the current drives the breakdown of the compound into simpler substances.

For Example: The electrolysis of water (H2O) to produce Hydrogen gas (H2) and Oxygen gas (O2):

2H2O (l)→ 2H2 (g) + O2 (g)

Summary

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

The decomposition reactions where energy is supplied in the form of heat, light, or electricity are as follows-

CaCO3 (s) → CaO (s) + CO2 (g) (For Heat), 2H2O2 (aq) → 2H2O (l) + O2 (g) (For Light), 2H2O (l)→ 2H2 (g) + O2 (g) (For Electricity).

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