Question

give 1 example each of displacement, decomposition and combination reaction with explanation.​

Answer 1

Explanation:

Combination reaction

CaO (s) + H2O (l) ---> Ca(OH)2 (aq)

• In this reaction , calcium oxide and water combine to form a single product , calcium hydroxide.
• Reactions in which a single product is formed from two or more reactants are called combination reaction.

Decomposition reaction

CaCO3 (s) ----> CaO (s) + CO2 (g)

• In this reaction calcium carbonate breaks into calcium oxide and carbon dioxide.
• Reactions in which a reactant split into two or more products are called decomposition reaction.

Displacement Reaction

Fe (s) + CuSO4 (aq) ----> FeSO4 (aq) + Cu (s)

• In this reaction , iron displaced copper from copper sulphate solution.
• Reactions in which a more reactive element displaces other element from its compound are called displacement reaction.

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