Which of the following is strongest Bronsted base

Options

A. `ClO^(-)`
B. `ClO_(2)^(-)`
C. `ClO_(3)^(-)`
D. `ClO_(4)^(-)`

Explanation

To determine which of the given options is the strongest Bronsted base, we need to understand the concept of Bronsted acids and bases. A Bronsted base is defined as a substance that can accept protons (H+ ions).

### Step-by-Step Solution:

1. **Identify the Bronsted Acids**:
We start by identifying the Bronsted acids from the given options. Bronsted acids are substances that can donate protons (H+ ions).

2. **Determine the Strength of the Acids**:
The strength of the acids can be ranked. For example, if we consider the chlorous acids:
- HClO4 (Perchloric acid) is a strong acid.
- HClO3 (Chloric acid) is a moderately strong acid.
- HClO2 (Chlorous acid) is weaker than HClO3.
- HClO (Hypochlorous acid) is the weakest among them.

3. **Analyze the Corresponding Conjugate Bases**:
The strength of the conjugate base is inversely related to the strength of the acid. The stronger the acid, the weaker its conjugate base will be. Therefore, the conjugate bases corresponding to the acids are:
- HClO4 → ClO4- (weak base)
- HClO3 → ClO3- (moderate base)
- HClO2 → ClO2- (stronger base)
- HClO → ClO- (strongest base)

4. **Rank the Conjugate Bases**:
Based on the above analysis, we can rank the conjugate bases in terms of their basic strength:
- ClO- (strongest base)
- ClO2- (stronger base)
- ClO3- (moderate base)
- ClO4- (weak base)

5. **Conclusion**:
From the analysis, we conclude that the strongest Bronsted base among the options is ClO-.

### Final Answer:
The strongest Bronsted base is ClO-.