When an acid cell is charged, then: A) voltage of cell increases B) resistance of cell increases C) electrolyte of cell dilutes D) None of the above

Options

A. voltage of cell increases
B. resistance of cell increases
C. eletrolyte of cell dilutes
D. None of these

Answer

To solve the question "When an acid cell is charged, then:", we will analyze each of the options provided and determine the correct answer based on the principles of electrochemistry.

### Step-by-Step Solution:

1. **Understanding Acid Cell**:
An acid cell, such as a lead-acid battery, uses sulfuric acid as the electrolyte. During the charging process, the chemical reactions at the electrodes restore the original materials of the electrodes.

**Hint**: Remember that an acid cell typically refers to a lead-acid battery, which uses sulfuric acid as the electrolyte.

2. **Charging Process**:
When the acid cell is charged, the reactions at the electrodes involve the conversion of lead sulfate (PbSO4) back into lead (Pb) and lead dioxide (PbO2). This process involves the movement of ions and electrons, leading to the restoration of the electrodes.

**Hint**: Focus on the reactions occurring at the electrodes during charging. What happens to the materials?

3. **Effect on Voltage**:
During charging, the voltage of the cell increases. This is because the cell is being restored to its original state, and the potential difference across the electrodes increases as the materials are converted back to their original forms.

**Hint**: Consider how the potential difference is affected by the restoration of the electrodes.

4. **Effect on Resistance**:
The resistance of the cell does not necessarily increase during charging. In fact, as the electrodes are restored, the overall conductivity of the electrolyte may improve, potentially leading to a decrease in resistance.

**Hint**: Think about how the physical state of the electrolyte and electrodes might affect resistance.

5. **Effect on Electrolyte Concentration**:
The electrolyte does not dilute during charging; rather, the concentration of the sulfuric acid may increase as water is consumed in the reactions. Thus, the electrolyte does not dilute.

**Hint**: Reflect on what happens to the water and ions in the electrolyte during the charging process.

6. **Conclusion**:
Based on the analysis, the correct answer to the question is:
**A) voltage of cell increases**.

### Final Answer:
**A) voltage of cell increases**.