Benzaldehyde will be formed in the reaction –

Options

A. Hydrolysis of `C_(6)H_(5)CHCl_(2)`
B. Ozonolysis of `C_(6)H_(5)CH = CH_(2)`
C. Both the above
D. None of the above

Answer

To determine the reaction that leads to the formation of benzaldehyde, we can analyze the hydrolysis of C6H5CHCl2 and ozonolysis of C6H5-CH=CH2. Here’s a step-by-step solution:

### Step 1: Understanding the Hydrolysis of C6H5CHCl2
1. **Identify the compound**: C6H5CHCl2 consists of a benzene ring (C6H5) attached to a carbon (CH) that has two chlorine (Cl) atoms.
2. **Perform hydrolysis**: Hydrolysis involves the reaction of the compound with water (H2O). The hydroxide ion (OH-) from water acts as a nucleophile and substitutes one of the chlorine atoms.
3. **Substitution reaction**: The reaction can be represented as:
\[ C6H5CHCl2 + H2O \rightarrow C6H5CH(OH)Cl + HCl \]
Here, one Cl is replaced by OH.

### Step 2: Formation of Benzaldehyde
4. **Stability of the intermediate**: The intermediate C6H5CH(OH)Cl has two hydroxyl (OH) groups on the same carbon, which is unstable.
5. **Elimination of water**: To stabilize the molecule, a water molecule is eliminated:
\[ C6H5CH(OH)Cl \rightarrow C6H5CHO + H2O \]
This results in the formation of benzaldehyde (C6H5CHO).

### Step 3: Analyzing Ozonolysis of C6H5-CH=CH2
6. **Identify the compound**: C6H5-CH=CH2 has a benzene ring attached to a carbon-carbon double bond.
7. **Perform ozonolysis**: Ozonolysis involves the reaction with ozone (O3), which cleaves the double bond and forms an ozonide.
8. **Cleavage of the double bond**: The ozonide will rearrange to give:
\[ C6H5CHO + CH2O \]
Here, one of the products is benzaldehyde.

### Conclusion
9. **Final products**: Both reactions (hydrolysis of C6H5CHCl2 and ozonolysis of C6H5-CH=CH2) yield benzaldehyde as a product.

Thus, the correct answer to the question is that benzaldehyde will be formed in the hydrolysis of C6H5CHCl2 and ozonolysis of C6H5-CH=CH2.