The reagents used in the preparation of DDT from chlorobenzene are

Options

A. Chloral `(C Cl_(3)CHO)`
B. Conc. `H_(2)SO_(4)`
C. `CH_(3)COC Cl_(3)`
D. `CH_(2) ClCOCH_(2)Cl`

Answer

To prepare DDT (Dichloro-Diphenyl-Trichloroethane) from chlorobenzene, we follow a series of steps involving specific reagents. Here’s a step-by-step breakdown of the process:

### Step 1: Understanding the Reactants
- **Chlorobenzene** is the starting material, which is a benzene ring with one chlorine atom attached.
- **Chloral** (CCl3CHO) is the other reactant needed for the synthesis of DDT.

### Step 2: Reaction Setup
- The reaction involves chlorobenzene and chloral in a specific molar ratio. The typical ratio used is 2 moles of chlorobenzene to 1 mole of chloral.

### Step 3: Catalysis
- **Sulfuric Acid (H2SO4)** is used as a catalyst in this reaction. It helps in facilitating the reaction between chlorobenzene and chloral.

### Step 4: Heating the Mixture
- The mixture of chlorobenzene and chloral is heated in the presence of sulfuric acid. This heating is crucial as it drives the reaction forward.

### Step 5: Formation of DDT
- During the heating process, DDT is formed as a product of the reaction. The reaction leads to the formation of the DDT compound through a series of electrophilic aromatic substitution reactions.

### Summary of Reagents
- The reagents used in the preparation of DDT from chlorobenzene are:
1. **Chlorobenzene**
2. **Chloral**
3. **Sulfuric Acid (H2SO4)**

### Final Product
- The final product of this reaction is DDT, which is known for its use as an insecticide and mosquito repellent.

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