The product formed in the reaction of `SOCl_2` (thionyl chloride) with white phosphorous is.

Options

A. `PCl_3`
B. `SO_2 Cl_2`
C. `SCl_2`
D. `POCl_3`

Explanation

To determine the product formed in the reaction of thionyl chloride (SOCl₂) with white phosphorus (P₄), we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- Thionyl chloride (SOCl₂)
- White phosphorus (P₄)

### Step 2: Write the Reaction
When thionyl chloride reacts with white phosphorus, the main products formed are phosphorus trichloride (PCl₃), sulfur dioxide (SO₂), and disulfur dichloride (S₂Cl₂). The reaction can be represented as:

\[ P_4 + 8 SOCl_2 \rightarrow 4 PCl_3 + 4 SO_2 + 2 S_2Cl_2 \]

### Step 3: Identify the Main Product
Among the products formed, phosphorus trichloride (PCl₃) is the primary product of interest.

### Step 4: Conclusion
Thus, the product formed in the reaction of SOCl₂ with white phosphorus is phosphorus trichloride (PCl₃).

### Final Answer
The correct answer is **PCl₃**.

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