When `SiCl_(4)` is allowed to undergo hydrolysis it gives

Options

A. `SiO_(2)` - Silicic acid
B. `Si(OH)_(4)` - Silicic acid
C. `Si(OH) Cl_(3)` - Silicic acid
D. `SiCl_4` do not undergo hydrolysis

Answer

To solve the question regarding the hydrolysis of silicon tetrachloride (SiCl₄), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Hydrolysis**:
Hydrolysis is a chemical reaction involving the addition of water (H₂O) to a substance, resulting in the breakdown of that substance and the formation of new products.

2. **Writing the Reaction**:
When silicon tetrachloride (SiCl₄) undergoes hydrolysis, it reacts with water:
\[ \text{SiCl}_4 + 2 \text{H}_2\text{O} \rightarrow \text{Si(OH)}_4 + 4 \text{HCl} \]
Here, SiCl₄ reacts with water to produce silicon hydroxide (Si(OH)₄) and hydrochloric acid (HCl).

3. **Identifying the Products**:
- The primary product from this reaction is silicon hydroxide, also known as silicic acid (Si(OH)₄).
- Hydrochloric acid (HCl) is also produced as a byproduct.

4. **Balancing the Reaction**:
To ensure the reaction is balanced, we check the number of each type of atom on both sides of the equation:
- On the left: 1 Si, 4 Cl, 4 H, and 2 O.
- On the right: 1 Si, 4 H (from Si(OH)₄ and HCl), and 4 Cl (from 4 HCl).
The reaction is balanced as the number of atoms of each element is equal on both sides.

5. **Conclusion**:
The product formed when SiCl₄ undergoes hydrolysis is silicon hydroxide (Si(OH)₄), which is also referred to as silicic acid.

### Final Answer:
When SiCl₄ is allowed to undergo hydrolysis, it gives silicon hydroxide (Si(OH)₄) and hydrochloric acid (HCl).

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