In kolbe’s electrolytic synthesis the pOH of solution will be

Options

A. decreases
B. Increases
C. Constant
D. None of these

Answer

To determine the pOH of the solution during Kolbe’s electrolytic synthesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Kolbe’s Electrolysis**:
- Kolbe’s electrolysis involves the electrolysis of sodium or potassium salts of carboxylic acids in an aqueous solution.

2. **Electrolysis Process**:
- When the electrolysis is performed, the carboxylic acid salts dissociate in the solution, and the electrolysis leads to the formation of alkanes, carbon dioxide (CO2), and hydrogen gas (H2).

3. **Formation of KOH**:
- During the electrolysis, potassium ions (K⁺) and hydroxide ions (OH⁻) are produced. The hydroxide ions combine with potassium ions to form potassium hydroxide (KOH).

4. **Effect on pH**:
- The formation of KOH increases the basicity of the solution. Since KOH is a strong base, its presence will increase the pH of the solution.

5. **Relationship between pH and pOH**:
- The relationship between pH and pOH is given by the equation:
\[ pH + pOH = 14 \]
- If the pH increases due to the formation of KOH, then the pOH must decrease to maintain the constant sum of 14.

6. **Conclusion**:
- Therefore, during Kolbe’s electrolytic synthesis, the pOH of the solution decreases as the pH increases.

### Final Answer:
The pOH of the solution will decrease during Kolbe’s electrolytic synthesis.

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