During formation of `CHCl_(3)` from `C_(2)H_(5)OH` and bleaching power, which one of the following does not occur

Options

A. Hydrolysis
B. Oxidation
C. Reduction
D. Chlorination

Answer

To solve the question regarding the formation of chloroform (CHCl₃) from ethanol (C₂H₅OH) and bleaching powder (Ca(OCl)₂), we will analyze the reactions that occur during this process and identify which one does not take place.

### Step-by-Step Solution:

1. **Understanding the Reactants**:
- Ethanol (C₂H₅OH) is the organic compound we are starting with.
- Bleaching powder, chemically known as calcium oxychloride (Ca(OCl)₂), acts as a source of chlorine and also provides calcium hydroxide upon hydrolysis.

2. **Hydrolysis of Bleaching Powder**:
- When bleaching powder is mixed with water, it undergoes hydrolysis to produce calcium hydroxide (Ca(OH)₂) and chlorine gas (Cl₂).
- The reaction can be represented as:
\[ \text{Ca(OCl)}_2 + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 + \text{Cl}_2 \]

3. **Oxidation of Ethanol**:
- Chlorine (Cl₂) acts as an oxidizing agent and oxidizes ethanol (C₂H₅OH) to acetaldehyde (C₂H₄O) and hydrochloric acid (HCl).
- The oxidation reaction can be represented as:
\[ \text{C}_2\text{H}_5\text{OH} + \text{Cl}_2 \rightarrow \text{C}_2\text{H}_4\text{O} + 2\text{HCl} \]

4. **Chlorination**:
- The acetaldehyde (C₂H₄O) then undergoes chlorination, where chlorine replaces hydrogen atoms to form trichloroacetaldehyde (CCl₃CHO).
- This step can be represented as:
\[ \text{C}_2\text{H}_4\text{O} + 3\text{Cl}_2 \rightarrow \text{CCl}_3\text{CHO} \]

5. **Hydrolysis of Trichloroacetaldehyde**:
- Finally, the trichloroacetaldehyde (CCl₃CHO) undergoes hydrolysis in the presence of calcium hydroxide to yield chloroform (CHCl₃) and other byproducts.
- The hydrolysis reaction can be represented as:
\[ \text{CCl}_3\text{CHO} + \text{Ca(OH)}_2 \rightarrow \text{CHCl}_3 + \text{byproducts} \]

6. **Identifying the Non-Occurring Reaction**:
- From the reactions outlined above, we see that oxidation, chlorination, and hydrolysis occur.
- However, there is no reduction reaction taking place in this process. Chlorine is acting as an oxidizing agent, which means it is oxidizing ethanol, not reducing it.

### Conclusion:
The reaction that does not occur during the formation of chloroform from ethanol and bleaching powder is **reduction**.