When a mixture of carbon monoxide and chlorine is exposed to sunlight the product formed is :

Options

A. Carbon tetrachloride
B. Thionyl chloride
C. Phosgene
D. Phosphine

Answer

To solve the question regarding the product formed when a mixture of carbon monoxide (CO) and chlorine (Cl2) is exposed to sunlight, we can follow these steps:

### Step 1: Understanding the Reactants
We have two reactants: carbon monoxide (CO) and chlorine gas (Cl2).

### Step 2: Identifying the Reaction Conditions
The reaction occurs in the presence of sunlight, which indicates that it may involve a photochemical reaction. Photochemical reactions often lead to the formation of new products due to the energy provided by sunlight.

### Step 3: Considering Possible Products
The options given are:
1. Carbon tetrachloride (CCl4)
2. Thionyl chloride (SOCl2)
3. Phosphine (PH3)
4. Phosphine (CH3)

We need to determine which of these products can be formed from the reaction of CO and Cl2.

### Step 4: Analyzing the Reaction
When carbon monoxide reacts with chlorine in the presence of sunlight, it can lead to the formation of a compound known as phosgene (COCl2), but the question suggests phosphine as a product.

However, phosphine (PH3) is not a direct product of this reaction. Instead, the correct product formed is phosgene (COCl2), which is not listed in the options provided.

### Step 5: Conclusion
Based on the reaction of carbon monoxide and chlorine in sunlight, the expected product is phosgene (COCl2). However, since the question asks for phosphine and lists it as an option, we conclude that the intended answer might be a miscommunication.

### Final Answer
The product formed when a mixture of carbon monoxide and chlorine is exposed to sunlight is phosgene (COCl2), but if we strictly follow the options given, the closest answer would be phosphine (PH3), though it is not directly formed from this reaction.

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