Silicone oil is obtained from the hydrolysis and polymerization of

Options

A. trimethychlorosilane and dimethyldichloro-silane
B. trimethylchlorosilane and methyltrichloro-silane
C. methyltrichlorosilance and dimethyldichloro-silane
D. triethylchlorosilance and diethyldichlorosilance

Explanation

To determine the source of silicone oil, we need to understand the process of hydrolysis and polymerization of specific compounds. Here’s a step-by-step solution:

### Step 1: Identify the Compounds
Silicone oil is synthesized from the hydrolysis and polymerization of silanes. The specific silanes involved are trimethylchlorosilane and dimethyldichlorosilane.

**Hint:** Look for compounds that contain silicon and chlorine, as these are typically involved in the formation of silicone products.

### Step 2: Hydrolysis Reaction
The first step in the formation of silicone oil is the hydrolysis of the silanes. When trimethylchlorosilane (Si(CH₃)₃Cl) and dimethyldichlorosilane (Si(CH₃)₂Cl₂) are hydrolyzed, they react with water (H₂O) to form silanol groups (Si-OH).

**Hint:** Hydrolysis involves the reaction of a compound with water, leading to the formation of hydroxyl groups.

### Step 3: Polymerization Reaction
After hydrolysis, the silanol groups can undergo condensation reactions, leading to polymerization. During this process, the silanol groups react with each other, releasing water and forming siloxane bonds (Si-O-Si). This results in the formation of a polymeric structure, which is silicone oil.

**Hint:** Polymerization typically involves the joining of smaller molecules (monomers) to form a larger molecule (polymer) with the release of a small molecule (like water).

### Step 4: Formation of Silicone Oil
The final product of this hydrolysis and polymerization process is silicone oil, which consists of a long chain of siloxane (Si-O) linkages with methyl groups attached.

**Hint:** Silicone oil is characterized by its siloxane backbone and is known for its lubricating properties and thermal stability.

### Conclusion
Silicone oil is obtained from the hydrolysis and polymerization of trimethylchlorosilane and dimethyldichlorosilane.

**Final Answer:** Trimethylchlorosilane and dimethyldichlorosilane.

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