Both ionic and free radical mechanism involve in the reaction -

Options

A. Chlorination of alkane
B. Williamson’s synthesis
C. Electrolysis of potassium acetate
D. Friedel-crafts reaction

Answer

To determine which reaction mechanism involves both ionic and free radical mechanisms, we will analyze the options provided in the question.

### Step-by-Step Solution:

1. **Understanding Reaction Mechanisms**:
- Ionic mechanisms involve the formation of charged species (ions) during the reaction.
- Free radical mechanisms involve species that have unpaired electrons, known as free radicals.

2. **Analyzing the Options**:
- **Option 1: Chlorination of Alkenes**:
- In the presence of sunlight, Cl2 dissociates into free radicals (Cl•), which then react with alkenes. This mechanism primarily involves free radicals and does not involve ionic intermediates.
- **Option 2: Friedel-Crafts Reaction**:
- This reaction involves the formation of a carbocation (ionic species) when an alkyl halide reacts with AlCl3. It does not involve free radicals, as the mechanism relies on the formation of a carbocation.
- **Option 3: Electrolysis of Potassium Acetate (Kolbe Electrolysis)**:
- In this reaction, the acetate ion (CH3COO-) can generate free radicals (CH3•) during electrolysis. The reaction also involves ionic species, as the acetate ion is negatively charged. This reaction involves both ionic and free radical mechanisms.
- **Option 4: Other Reactions**:
- Other options may also involve either ionic or free radical mechanisms, but they do not combine both.

3. **Conclusion**:
- The only reaction that involves both ionic and free radical mechanisms is the Kolbe Electrolysis of potassium acetate. Therefore, the correct answer is **Option 3**.

### Final Answer:
The reaction mechanism that follows both ionic and free radical mechanisms is the **Kolbe Electrolysis of potassium acetate**.

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