Which of the following is compounds cannot be stored in glass vessels ?

Options

A. HF
B. HCI
C. `H_(2)SO_(4)`
D. HI

Explanation

To determine which compound cannot be stored in glass vessels, we will analyze each of the given compounds: HF, HCl, H2SO4, and HI.

### Step 1: Analyze HF (Hydrogen Fluoride)
- **Properties**: HF is a weak acid and is known to be highly reactive with silicates, which are present in glass.
- **Reaction with Glass**: When HF comes into contact with glass, it reacts with the silicates in the glass, leading to the degradation of both the HF and the glass itself.
- **Conclusion**: HF cannot be stored in glass vessels due to this reaction.

### Step 2: Analyze HCl (Hydrochloric Acid)
- **Properties**: HCl is a strong acid but does not react with glass.
- **Conclusion**: HCl can be safely stored in glass vessels.

### Step 3: Analyze H2SO4 (Sulfuric Acid)
- **Properties**: H2SO4 is a strong acid and does not react with glass.
- **Conclusion**: H2SO4 can also be safely stored in glass vessels.

### Step 4: Analyze HI (Hydroiodic Acid)
- **Properties**: HI is a strong acid and does not react with glass.
- **Conclusion**: HI can be safely stored in glass vessels.

### Final Conclusion
Based on the analysis, the compound that cannot be stored in glass vessels is **HF (Hydrogen Fluoride)**.

### Summary:
- **HF**: Cannot be stored in glass (reacts with silicates).
- **HCl**: Can be stored in glass.
- **H2SO4**: Can be stored in glass.
- **HI**: Can be stored in glass.

### Answer:
**HF (Hydrogen Fluoride)** cannot be stored in glass vessels.