In which of the following reaction, phenol or sodium phenoxide is not formed ?

Options

A. `C_(6) H_(5) SO_(3)H +aq KOH`
B. `C_(6) H_(5) Cl +Na OH`
C. `C_(6) H_(5) N_(2) Cl + aq. Na OH`
D. `C_(6) H_(5)N NCl underset(Delta)overset(H_(2) O) to `

Answer

To determine in which of the given reactions phenol or sodium phenoxide is not formed, we can analyze each option step by step.

### Step 1: Analyze the First Reaction
- **Reaction**: Benzene sulfonic acid + Aqueous KOH
- **Expected Product**: When benzene sulfonic acid reacts with aqueous KOH, it undergoes hydrolysis to form phenol.
- **Conclusion**: Phenol is formed.

### Step 2: Analyze the Second Reaction
- **Reaction**: Benzene chloride + NaOH
- **Expected Product**: Benzene chloride does not undergo nucleophilic substitution with NaOH due to the strong C-Cl bond (sp² hybridized carbon). Thus, there is no reaction.
- **Conclusion**: Neither phenol nor sodium phenoxide is formed.

### Step 3: Analyze the Third Reaction
- **Reaction**: A compound (not specified) + Aqueous NaOH
- **Expected Product**: This reaction typically results in the formation of sodium phenoxide when a suitable leaving group is present.
- **Conclusion**: Sodium phenoxide is formed.

### Step 4: Analyze the Fourth Reaction
- **Reaction**: Benzene diazonium salt + Water
- **Expected Product**: The diazonium salt reacts with water, leading to the formation of phenol.
- **Conclusion**: Phenol is formed.

### Final Conclusion
From the analysis of all reactions, we find that in the second reaction (Benzene chloride + NaOH), neither phenol nor sodium phenoxide is formed. Therefore, the correct answer is that phenol or sodium phenoxide is not formed in the second reaction.