HF is not stored in glass bottles because

Options

A. It reacts with the aluminium oxide of the glass
B. it reacts with `SiO_(2)` of the glass
C. It reacts with the visible part of the light
D. It reacts with sodium oxide of the glass

Answer

To solve the question regarding why HF (hydrofluoric acid) is not stored in glass bottles, we can follow these steps:

### Step 1: Understand the Composition of Glass
Glass is primarily composed of silica (SiO2) and other compounds such as sodium silicate (Na2SiO3).

### Step 2: Identify the Reactivity of HF
Hydrofluoric acid is known to be a highly reactive acid, particularly with silicates and silica. It can react with the silicon dioxide present in glass.

### Step 3: Write the Reaction
When HF comes into contact with silica (SiO2), a reaction occurs. The reaction can be represented as:
\[ \text{Na}_2\text{SiO}_3 + 6\text{HF} \rightarrow \text{Na}_2\text{SiF}_6 + 3\text{H}_2\text{O} \]

### Step 4: Conclusion
Since HF reacts with the silicates in glass, it leads to the dissolution of the glass material. Therefore, storing HF in glass bottles would result in the degradation of the container.

### Final Answer
HF is not stored in glass bottles because it reacts with SiO2 (silica) in the glass, leading to the dissolution of the glass.

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