NEET2026Chemistry-Equilibrium
NEET 2026 Chemistry Buffer Solutions MCQ Question
Type: MCQ-numerical-Medium-Class 11
At 298 K, a certain buffer solution contains equal concentrations of X⁻ and HX, Kb for X⁻ is 10⁻¹⁰. What is the pH of this buffer solution?
A
2
B
4
C
6
D
10
Correct Answer
Option B
Detailed Explanation
Given that [X⁻] = [HX], pH = pKa + log([X⁻]/[HX]) = pKa = 4. The pH is 4.
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