Download - Decomposition reaction
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
When a single compound breaks up into two or many simpler substances it is called decomposition reaction.
Decomposition
Breaking of single compound into simpler substances
Decomposition Reaction
Subtopic ID: 01.03.02
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
When we heat lead nitrate it becomes lead oxide with the evolution of oxygen gas and brown fumes of nitrogen dioxide.
2Pb(NO3)2 2PbO + 4NO2↑ + O2 ↑Heat
Brown fumes of
nitrogen dioxide
Decomposition Reaction
Subtopic ID: 01.03.02
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
Watch this experiment and answer the question.Why does blue copper sulphate
solution become white on heating?
View answer
Decomposition Reaction
Subtopic ID: 01.03.02
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
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CuSO4.5H2O CuSO4 + 5H2O
Decomposition Reaction
Subtopic ID: 01.03.02
Blue copper sulphate pentahydrate undergoes decomposition on heating to give white anhydrous copper sulphate and water vapour
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
2H2O Electrolysis 2H2 + O2
Decomposition Reaction When we introduce electricity using a 9 volts battery, water separates into hydrogen and oxygen. This reaction is called electrolysis. It is another example of decomposition reaction. You can observe the evolution of hydrogen gas at cathode and oxygen at anode during the electrolysis of water. The evolution of gas increases when we add a few pinches of table salt.
Subtopic ID: 01.03.02
Electrolysis
CBSE - 10 Chemical Reactions and Equations
Types of Chemical ReactionsChemistry
2AgCl Sunlight 2Ag + Cl2
Decomposition Reaction Silver chloride is sensitive to light. On exposure to sunlight it becomes silver. Since this reaction takes place in presence of sunlight it is also called photochemical reaction.
Subtopic ID: 01.03.02
Photochemical Reaction