NEET Chemistry pH & Buffer Solutions MCQ Question
What is the pH of a buffer solution containing 0.1 M acetic acid (CH3COOH) and 0.1 M sodium acetate (CH3COONa), given that the pKa of acetic acid is 4.75?
4.75
7.00
9.25
2.00
Correct Answer
Detailed Explanation
The pH of a buffer solution is calculated using the Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]). Here, [A-] = [HA], so pH = pKa = 4.75.
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