For a acid 'A' pH =2 and for acid 'B' pH is 4. Then

Options

A. A is more basic than B
B. B is more acidic than A
C. A is more acidic than B
D. B is more basic than A

Answer

To solve the problem step by step, we need to analyze the given pH values of two acids, A and B, and determine their relative acidity.

### Step 1: Understand pH Values
The pH scale ranges from 0 to 14, where lower pH values indicate higher acidity. A pH of 7 is neutral, below 7 is acidic, and above 7 is basic.

### Step 2: Identify the pH of Each Acid
- For acid A, the pH is 2.
- For acid B, the pH is 4.

### Step 3: Compare the pH Values
Since pH is inversely related to acidity:
- Acid A (pH = 2) is more acidic than acid B (pH = 4) because 2 < 4.

### Step 4: Conclusion on Acidity
From the comparison, we conclude that:
- Acid A is more acidic than acid B.

### Step 5: Evaluate the Options
Now we can evaluate the given options based on our conclusion:
- **Option A:** A is more basic than B (Incorrect, A is more acidic).
- **Option B:** B is more acidic than A (Incorrect, A is more acidic).
- **Option C:** A is more acidic than B (Correct, as we established).
- **Option D:** B is more acidic than A (Incorrect, A is more acidic).

### Final Answer
The correct answer is **Option C: A is more acidic than B**.

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