NEET Chemistry pH & Buffer Solutions MCQ Question
What is the pH of a buffer solution formed by mixing equal molar concentrations of ammonia and ammonium chloride, given that the pKₐ of ammonia is 9.25?
9.25
7.00
14.00
75
Correct Answer
Detailed Explanation
According to the NCERT context, when the molar concentration of a base and its conjugate acid in a buffer solution is the same, the pH of the solution equals the pKₐ of the base. Therefore, for a buffer solution of ammonia and ammonium chloride, the pH is equal to the pKₐ of ammonia, which is 9.25.
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