Which one of the following is the strongest acid ?

Options

A.
B.
C.
D.

Answer

To determine which of the given acids is the strongest, we need to analyze the acidic strength based on the ability of the acid to donate protons (H⁺ ions) and the stability of the resulting conjugate base.

### Step-by-Step Solution:

1. **Identify the Acids**:
- First, we need to list the acids provided in the question. For example, let’s assume the options are:
- Acetic Acid (CH₃COOH)
- Hydrochloric Acid (HCl)
- Sulfuric Acid (H₂SO₄)
- Nitric Acid (HNO₃)

2. **Understand Acid Strength**:
- Acid strength is determined by the degree of ionization in water. Strong acids completely dissociate in water, while weak acids do not.

3. **Analyze Each Acid**:
- **Acetic Acid (CH₃COOH)**: This is a weak acid and does not completely dissociate in water.
- **Hydrochloric Acid (HCl)**: This is a strong acid and completely dissociates in water.
- **Sulfuric Acid (H₂SO₄)**: This is a very strong acid, and it also completely dissociates in water. It is stronger than HCl.
- **Nitric Acid (HNO₃)**: This is also a strong acid and completely dissociates in water, but it is weaker than sulfuric acid.

4. **Compare the Acids**:
- Comparing the dissociation of the acids, we see that:
- HCl is a strong acid.
- H₂SO₄ is a stronger acid than HCl.
- HNO₃ is strong but weaker than H₂SO₄.
- Acetic Acid is the weakest among them.

5. **Conclusion**:
- Based on the analysis, the strongest acid among the options given is **Sulfuric Acid (H₂SO₄)**.

### Final Answer:
**Sulfuric Acid (H₂SO₄) is the strongest acid.**