Question

The reaction $ \text{CuSO_4 + \text{Zn} \rightarrow \text{ZnSO}_4 + \text{Cu} $ is an example of a:}

• A. Combination reaction
• B. Double displacement reaction
• C. Decomposition reaction
• D. Displacement reaction

Hint:

Displacement reactions occur when one element replaces another in a compound. They are characterized by the direct replacement of one element by another, often involving metals reacting with metal salts. In this case, zinc displaces copper from copper sulfate.

Answer 1

The Correct Option is D

Step 1: Analyze the Reaction.
The given reaction is: \[ \text{CuSO}_4 + \text{Zn} \rightarrow \text{ZnSO}_4 + \text{Cu}. \] In this reaction:
Zinc ($ \text{Zn} $) displaces copper ($ \text{Cu} $) from copper sulfate ($ \text{CuSO}_4 $).
The products are zinc sulfate ($ \text{ZnSO}_4 $) and elemental copper ($ \text{Cu} $). Step 2: Identify the Type of Reaction.
This is a displacement reaction, where one element replaces another in a compound.
Specifically, it is a single displacement reaction. Step 3: Analyze Each Option.
Option (1): Combination reaction — Incorrect
Option (2): Double displacement reaction — Incorrect
Option (3): Decomposition reaction — Incorrect
Option (4): Displacement reaction — Correct Step 4: Final Answer.
\[ \boxed{(4) \quad \text{Displacement reaction}} \]