Which of the following does not differentiate between electrochemical cell and elec trolytic cell?

Options

A. Spontaneous or non-spontaneous nature of the chemical process
B. Chemical reactions occuring at the electrodes
C. Positive or negative nature of anode
D. None of the answer is correct.

Explanation

To determine which of the following does not differentiate between an electrochemical cell and an electrolytic cell, we need to analyze the characteristics of both types of cells.

### Step-by-Step Solution:

1. **Understanding Electrochemical Cells**:
- Electrochemical cells convert chemical energy into electrical energy through spontaneous redox reactions.
- In these cells, oxidation occurs at the anode and reduction occurs at the cathode.

2. **Understanding Electrolytic Cells**:
- Electrolytic cells use electrical energy to drive a non-spontaneous chemical reaction.
- Similar to electrochemical cells, oxidation occurs at the anode and reduction occurs at the cathode.

3. **Identifying Key Differences**:
- **Spontaneity**: Electrochemical cells are spontaneous, while electrolytic cells are non-spontaneous.
- **Chemical Reactions**: Both types of cells involve oxidation and reduction reactions occurring at their respective electrodes.
- **Electrode Charge**: The anode is positive in electrolytic cells and negative in electrochemical cells, while the cathode is negative in electrolytic cells and positive in electrochemical cells.

4. **Analyzing the Options**:
- **Option 1**: Spontaneous and non-spontaneous nature - This does differentiate between the two cells.
- **Option 2**: Chemical reactions occurring at electrodes - This does not differentiate as both cells involve oxidation at the anode and reduction at the cathode.
- **Option 3**: Positive and negative nature changes - This does differentiate as the charges of electrodes are different in both cells.

5. **Conclusion**:
- The option that does not differentiate between an electrochemical cell and an electrolytic cell is **Option 2: Chemical reactions occurring at electrodes**.

### Final Answer:
**Option 2: Chemical reactions occurring at electrodes.**