NEET Chemistry pH & Buffer Solutions Assertion Reason Question
Assertion (A): The pH of a buffer solution containing equal concentrations of ammonia and ammonium chloride is equal to the pKa of ammonia. | Reason (R): In a buffer solution, pH is determined by the ratio of concentrations of conjugate acid and base.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
The pH of a buffer solution is equal to the pKa of the weak base when the concentrations of the base and its conjugate acid are equal. This is explained by the equation presented in the NCERT context.
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