Reaction of `PCl_3` and PhMgBr would give

Options

A. Bromobenzene
B. Chlorobenzene
C. Triphenyl phosphine
D. Dichlorobenzene

Explanation

To solve the question regarding the reaction of \( PCl_3 \) and \( PhMgBr \) (phenylmagnesium bromide), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants:**
- The reactants are \( PCl_3 \) (phosphorus trichloride) and \( PhMgBr \) (phenylmagnesium bromide).

2. **Understand the Nature of the Reactants:**
- \( PhMgBr \) is a Grignard reagent, which is a strong nucleophile. It can react with electrophiles, such as phosphorus in \( PCl_3 \).

3. **Determine the Reaction:**
- When \( PCl_3 \) reacts with \( PhMgBr \), the nucleophilic phenyl group from \( PhMgBr \) will attack the phosphorus atom in \( PCl_3 \).

4. **Stoichiometry of the Reaction:**
- Since \( PCl_3 \) has three chlorine atoms, it can react with three equivalents of \( PhMgBr \). Therefore, we will use 3 moles of \( PhMgBr \) for 1 mole of \( PCl_3 \).

5. **Write the Reaction Equation:**
- The reaction can be represented as:
\[ PCl_3 + 3 PhMgBr \rightarrow P(Ph)_3 + 3 MgBrCl \]
- In this reaction, the phosphorus atom forms a bond with three phenyl groups, resulting in the formation of triphenylphosphine (\( P(Ph)_3 \)) and magnesium bromide chloride (\( MgBrCl \)).

6. **Identify the Product:**
- The main product of this reaction is triphenylphosphine (\( P(Ph)_3 \)).

### Final Answer:
The reaction of \( PCl_3 \) and \( PhMgBr \) gives triphenylphosphine (\( P(Ph)_3 \)).

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