In kharash effect,reaction follows

Options

A. Free radical substituion
B. Electrohilic addition
C. Free radical addition
D. Nucleophillic addition

Answer

**Step-by-Step Solution:**

1. **Understanding Kharash Effect**: The Kharash effect refers to the addition of hydrogen halides (like HBr) to alkenes in a way that follows the anti-Markovnikov rule. This means that the halide (Br) adds to the carbon atom that has fewer hydrogen atoms, while the hydrogen adds to the carbon with more hydrogen atoms.

2. **Identifying the Reaction Type**: The Kharash effect specifically involves an addition reaction, where two reactants combine to form a single product. In this case, we are adding HBr to an alkene.

3. **Determining the Mechanism**: The addition under the Kharash effect occurs in the presence of peroxides, which generate free radicals. This is crucial because the presence of radicals leads to the anti-Markovnikov addition.

4. **Mechanism Steps**:
- **Initiation**: Peroxides decompose to form free radicals.
- **Propagation**: The free radical reacts with the alkene, leading to the formation of a new radical intermediate.
- **Termination**: The radical intermediate reacts with HBr, resulting in the final product where Br is added to the less substituted carbon atom.

5. **Conclusion**: The mechanism that follows the Kharash effect is a free radical mechanism. Therefore, the correct answer is that the reaction follows a free radical mechanism.

**Final Answer**: The Kharash effect follows a free radical mechanism.

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