Which of the following statement is correct about Galvanic cell?

Options

A. (a) It converts chemical energy into electrical energy
B. (b) It converts electrical energy into chemical energy.
C. (c) It converts metal from its free state to the combined state.
D. (d) It converts electrolyte into individual ions.

Answer

To determine which statement is correct about a Galvanic cell, we can analyze the properties and functions of a Galvanic cell step by step.

### Step-by-Step Solution:

1. **Understanding the Galvanic Cell**:
- A Galvanic cell is a type of electrochemical cell that converts chemical energy into electrical energy through spontaneous redox reactions.

2. **Components of a Galvanic Cell**:
- It consists of two half-cells:
- **Oxidation half-cell** (anode): where oxidation occurs.
- **Reduction half-cell** (cathode): where reduction occurs.
- These half-cells are connected by a **salt bridge**, which maintains electrical neutrality and prevents the mixing of the two half-cell solutions.

3. **Function of the Salt Bridge**:
- The salt bridge contains electrolytes (like KCl or KNO3) that allow the flow of ions to maintain charge balance in the half-cells.
- It completes the circuit, enabling the flow of electrons from the anode to the cathode.

4. **Analyzing the Statements**:
- **Statement A**: "It converts chemical energy into electrical energy."
- This statement is correct as it describes the primary function of a Galvanic cell.
- **Statement B**: "It converts electrical energy into chemical energy."
- This is incorrect; that describes an electrolytic cell.
- **Statement C**: "It converts metal from its free state to the combined state."
- This is also incorrect as it does not accurately describe the function of a Galvanic cell.
- **Statement D**: "It converts electrolyte into individual ions."
- This statement is incorrect; while dissociation may occur, it is not the primary function of a Galvanic cell.

5. **Conclusion**:
- The correct statement about the Galvanic cell is **Statement A**: "It converts chemical energy into electrical energy."

### Final Answer:
The correct statement about the Galvanic cell is: **It converts chemical energy into electrical energy.**

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