Question

Give one example each of displacement, decomposition and reaction with explanation

Answer 1

Explanation:

displacement:

Fe + CuSO4 = Cu + FeSO4

decomposition:

CaCO3 = CO2 + CaO

Answer 2

Answer:

1. Displacement reaction = Those reactions in which one element takes the place of another element in a compound are known as displacement reaction.

• Example = CuSO4+Zn=ZnSO+Cu

• Decomposition reactions = Those reactions in which a compound split up into two or more similar substance are known as decomposition reaction.
• Types of decomposition reaction are

1. Thermal reactions. Example = CaCO3 =CaO +CO2
2. Electrolysis reactions. Example =2H2O =2H2 +O2
3. Photochemical reactions. Example. 2AgBr=2Ag +Br2