what is decomposition reaction with example?
and
what is chemical reaction?
Answers
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
HEYA, BUDDY !!
→ The chemical reaction where a single substance breaks into two or more simple substances when heated is called a thermal decomposition reaction. Since the heat is required to break the bonds present in the substance, this reaction is usually endothermic.
→let us discuss the types of the decomposition reaction,
A) Thermal decomposition reaction:
The decomposition reactions in which the reactant is decomposed into two or more products by the heating of reaction. In this type of reaction, heat is required to break the bond in the reactant. Now let us see an example of this type of reaction,
CaCO3(s)−→−−(Heat)CaO(s)+CO2(g)
The above reaction is a very common type of thermal decomposition reaction where calcium carbonate (limestone) is decomposed into calcium oxide and carbon dioxide.
B) Photo decomposition reaction:
In this reaction, the reactant is decomposed into two or more constituent products by photolysis using the sunlight. Now let us see a reaction for the same,
2H2O2(l)−→−−(Light)2H2O(l)+O2(g)
In the above reaction, liquid hydrogen peroxide is decomposed to water and oxygen by reacting with sunlight.
C) Electrolytic decomposition:
In this type of reaction, the reactant is decomposed into two or more products by using the electric current. Let us see an example for this reaction,
2NaCl−→−−−−−(Electricity)2Na+Cl2
In the above reaction, the electricity is passed through a molten sodium chloride solution and decomposes into sodium and chlorine molecules
Now , discuss about chemical reaction ?
→ The chemical reaction is the process in which reactants react chemically and convert into products by chemical transformation. For example – Respiration – we inhale oxygen which reacts with glucose and produces carbon dioxide, water and energy.
As We know that, Reaction is given below –
C6H12O6 + 6O2 6CO2 + 6H2O + Energy
→ The Characteristics of a Chemical Reaction
Evolution of gas
Change in color
Change in temperature
Change in energy
Formation of precipitate
Change in state
→ Type of Chemical Reactions
Decomposition reaction
Combination reaction
Combustion reaction
Neutralization reaction
Single displacement reaction
Double displacement reaction
Precipitation reaction
Redox reaction