In an electrolchemical cell

Options

A. Potential energy changes into kinetic energy
B. Kinetic energy changes into potential energy
C. Chemical energy changes into electrical energy
D. Electrical energy changes into chemical energy

Explanation

To solve the question regarding the processes occurring in an electrochemical cell, we need to understand the fundamental principles of electrochemistry.

### Step-by-Step Solution:

1. **Understanding Electrochemical Cells**: An electrochemical cell is a device that converts chemical energy into electrical energy through redox reactions. It consists of two electrodes (anode and cathode) and an electrolyte.

2. **Chemical Energy to Electrical Energy**: In an electrochemical cell, the chemical reactions that occur at the electrodes involve the transfer of electrons. This transfer of electrons is what generates electrical energy. Therefore, the primary function of an electrochemical cell is to convert chemical energy (from the reactants) into electrical energy.

3. **Identifying the Correct Option**: Based on the options provided in the question:
- Potential energy changes into kinetic energy: This is incorrect as it does not describe the function of an electrochemical cell.
- Kinetic energy changes into potential energy: This is also incorrect.
- **Chemical energy changes into electrical energy**: This is the correct statement that describes the primary function of an electrochemical cell.
- Electrical energy changes into chemical energy: This describes an electrolytic cell, not an electrochemical cell.
- Electrochemical cell changes into chemical energy: This is incorrect as it misrepresents the process.

4. **Conclusion**: The correct answer is that in an electrochemical cell, **chemical energy changes into electrical energy**.

### Final Answer:
The correct option is: **Chemical energy changes into electrical energy.**