Define decomposition reaction and explain with equations its various types?
Answers
Answer:
A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds. These reactions often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds. For example, CaCO3→CaO+CO2.
Answer:
Explanation:
Decomposition reaction examples
Decomposition reactions happen all around us, but we often don’t notice them. Some common examples of decomposition reactions are provided below.
The decomposition of carbonic acid in soft drinks, which can be represented by the chemical equation H2CO3 → H2O + CO2
→Thermal decomposition reaction
A thermal decomposition reaction can be defined as a decomposition reaction which is activated by thermal energy. In other words, a thermal decomposition reaction requires energy to be supplied to the reactants in the form of heat. Such reactions are generally endothermic since energy is required to break the chemical bonds and separate the constituent elements. A common example of a thermal decomposition reaction is provided below.
→Electrolytic decomposition reaction
An electrolytic decomposition reaction is a type of decomposition reaction in which the activation energy for decomposition is provided in the form of electrical energy. An example of an electrolytic decomposition reaction is the electrolysis of water, which can be represented by the following chemical equation: 2H2O→ 2H2 + O2
CaCO3 → CaO + CO2
→Photo decomposition/ photolytic decomposition/ photochemical decomposition
A photodecomposition reaction is a type of decomposition reaction in which the reactant is broken down to its constituents by absorbing energy from photons. An example of a photo decomposition reaction is the decomposition into dioxygen and an oxygen radical, as represented by the chemical equation provided below.
O3 + hν → O2 + O.