NEET2022Chemistry-Acids and Bases
NEET 2022 Chemistry Buffer Solutions MCQ Question
Type: MCQ-numerical-Medium-Class 11
The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is ______. [Given pKₐ of CH₃COOH = 4.57]
A
4.57
B
2.57
C
5.57
D
3.57
Correct Answer
Option C
Detailed Explanation
Using the Henderson-Hasselbalch equation: pH = pKₐ + log([A⁻]/[HA]). Here, [A⁻] = 0.10 M and [HA] = 0.01 M, so pH = 4.57 + 1 = 5.57.
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