Aqueous solution of which of the following acids cannot be kept in a bottle of glass

Options

A. HF
B. HCl
C. HBr
D. Hl

Explanation

To determine which aqueous acid cannot be stored in a glass bottle, we need to analyze the properties of the acids in question and their interactions with glass.

### Step-by-Step Solution:

1. **Identify the Acids**:
We need to consider the common acids that might be listed in the options. Typically, these could include Hydrochloric acid (HCl), Sulfuric acid (H2SO4), Nitric acid (HNO3), and Hydrofluoric acid (HF).

2. **Understand the Interaction with Glass**:
Glass is primarily made of silica (SiO2). Some acids can react with silica, leading to the degradation of the glass container.

3. **Focus on Hydrofluoric Acid (HF)**:
Hydrofluoric acid is known for its ability to react with silica. The reaction can be represented as:
\[ \text{HF} + \text{SiO}_2 \rightarrow \text{SiF}_4 + \text{H}_2\text{O} \]
This reaction produces silicon tetrafluoride (SiF4) and water, effectively etching the glass and compromising the integrity of the container.

4. **Conclusion**:
Since HF reacts with glass, it cannot be stored in a glass bottle. Instead, it is typically stored in containers made of materials such as plastic or metal that do not react with HF.

### Final Answer:
The aqueous solution of Hydrofluoric acid (HF) cannot be kept in a bottle of glass.