`pK_(4)` values are given for some acids. Which is the strongest acid

Options

A. 2.05
B. 3.12
C. 10.02
D. 1.24

Answer

To determine which acid is the strongest based on given pKa values, we can follow these steps:

### Step 1: Understand the Relationship Between pKa and Acid Strength
The strength of an acid is inversely related to its pKa value. The lower the pKa value, the stronger the acid. This is because:
- pKa = -log(Ka)
- A higher Ka value indicates a stronger acid, and thus a lower pKa value.

### Step 2: Identify the Given pKa Values
Assuming we have a list of pKa values for different acids (for example:
- Acid A: pKa = 4.75
- Acid B: pKa = 3.25
- Acid C: pKa = 5.00
- Acid D: pKa = 2.00)

### Step 3: Compare the pKa Values
To find the strongest acid, we need to compare the pKa values:
- Acid A: pKa = 4.75
- Acid B: pKa = 3.25
- Acid C: pKa = 5.00
- Acid D: pKa = 2.00

### Step 4: Identify the Minimum pKa Value
From the comparison:
- The minimum pKa value among the listed acids is for Acid D, which has a pKa of 2.00.

### Step 5: Conclusion
Since Acid D has the lowest pKa value, it is the strongest acid among the given options.

### Final Answer
The strongest acid is Acid D (pKa = 2.00).

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