In the given reaction which one of the following statement is correct -
`C_(6)H_(5)-underset(CH_(3))underset(|)(C)=O+NH_(2)-OH to "Oxime" overset(PCl_(5))to` Amide

Options

A. Oxime may be E/Z
B. Amide on hydrolysis gives a mixture acetic acid, benzoic acid, aniline and methylamine.
C. Preparation of oxime is nucleophilic addition followed by elimination reaction.
D. oxime and amides are isomers.

Answer

To solve the question regarding the reaction of the compound \( C_6H_5C(=O)CH_3 \) with \( NH_2OH \) to form an oxime and subsequently reacting with \( PCl_5 \) to form an amide, we will analyze each step of the reaction and the statements provided.

### Step-by-Step Solution:

1. **Identify the Reactants:**
The reactants given are:
- \( C_6H_5C(=O)CH_3 \) (which is acetophenone)
- \( NH_2OH \) (hydroxylamine)

2. **Formation of the Oxime:**
When acetophenone reacts with hydroxylamine, a nucleophilic addition occurs:
- The nitrogen of hydroxylamine attacks the electrophilic carbon of the carbonyl group (C=O).
- This results in the formation of an intermediate, which rearranges to form the oxime, \( C_6H_5C(=N-OH)CH_3 \).

3. **Heating and Elimination:**
Upon heating, the oxime undergoes dehydration (removal of water) to form an imine:
- The reaction leads to the formation of \( C_6H_5C(=N)CH_3 \).

4. **Reaction with PCl5:**
The oxime then reacts with \( PCl_5 \):
- This reaction is known as the Beckmann rearrangement, which converts the oxime into an amide.
- The products formed are \( N-phenylacetamide \) and \( N-methylbenzamide \).

5. **Analyzing the Statements:**
Now, we will evaluate the correctness of the statements provided in the question:
- **Statement 1:** The oxime formed may be either E or Z.
- This statement is **true** because the oxime has a double bond (C=N) and can exhibit geometrical isomerism.
- **Statement 2:** Amide on hydrolysis gives a mixture of acetic acid, benzoic acid, and methyl amine.
- This statement is **true** as hydrolysis of the amides will yield the respective acids and amines.
- **Statement 3:** The preparation of the oxime is a nucleophilic addition followed by an elimination reaction.
- This statement is **true** because the formation of the oxime involves nucleophilic addition, followed by the elimination of water.
- **Statement 4:** Oxygens and amides are isomers.
- This statement is **true** as both have the same molecular formula but different structures.

6. **Conclusion:**
All four statements regarding the reaction are correct.

### Final Answer:
All four statements are true regarding the reaction of \( C_6H_5C(=O)CH_3 \) with \( NH_2OH \) and subsequent reaction with \( PCl_5 \).

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