Gem dilhalide on hydrolysis gives:

Options

A. Vic diol
B. Gem diol
C. Carbonyl compound
D. Carboxylic acid

Answer

To solve the question about the products formed from the hydrolysis of a geminal dihalide, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Geminal Dihalide:**
- A geminal dihalide is a compound where two halogen atoms are attached to the same carbon atom. For example, consider a compound like CH3-CH(Cl)(Cl)-CH3, where two chlorine atoms are bonded to the same carbon.

2. **Understand Hydrolysis:**
- Hydrolysis is a chemical reaction involving the breaking of a bond in a molecule using water. In this case, we will use potassium hydroxide (KOH) to facilitate the reaction.

3. **Nucleophilic Substitution:**
- In the presence of KOH, the hydroxide ion (OH⁻) acts as a nucleophile. It will attack the carbon atom bonded to the halogens (Cl in this case) and replace the halogen atoms.
- The reaction can be represented as follows:
- CH3-CH(Cl)(Cl)-CH3 + 2 KOH → CH3-CH(OH)(OH)-CH3 + 2 KCl

4. **Formation of the Product:**
- After the nucleophilic substitution, we will have a compound with two hydroxyl (OH) groups on the same carbon atom. This compound is CH3-CH(OH)(OH)-CH3.

5. **Stability Consideration:**
- Compounds with two hydroxyl groups on the same carbon are not stable. To achieve stability, a water molecule (H2O) will be eliminated from the compound.
- The elimination can be represented as:
- CH3-CH(OH)(OH)-CH3 → CH3-CH=CH2 + H2O

6. **Final Product:**
- The final product after hydrolysis and subsequent dehydration is an alkene, specifically propene (CH3-CH=CH2).

### Final Answer:
The hydrolysis of a geminal dihalide gives an alkene as the final product, typically after the removal of water.

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