Explain the reactions which requires energy for product formation with the help of equations
Answers
Answer:
(1.) Decomposition on heating
Calcium carbonate when heated gives quicklime (CaO) and carbon dioxide
CaCO
3
→CaO+CO
2
(2.) Decomposition by light
Silver chloride decomposes to silver and chlorine in presence of sunlight
2AgCl→2Ag+Cl
2
(3). Decomposition by electricity
Water on electrolysis gives hydrogen and oxygen
2H
2
O→2H
2
+O
2
Answer:
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Explanation:
Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electricity.
Decomposition on heating
Calcium carbonate when heated gives quicklime (CaO) and carbon dioxide
CaCO
3
→CaO+CO
2
(2.) Decomposition by light
Silver chloride decomposes to silver and chlorine in presence of sunlight
2AgCl→2Ag+Cl
2
(3). Decomposition by electricity
Water on electrolysis gives hydrogen and oxygen
2H
2
O→2H
2
+O
2