NEET Chemistry pH & Buffer Solutions Match the Following Question
Match Column-I with Column-II.
| Column-I | Column-II |
|---|---|
| (a) Acetic Acid and Sodium Acetate | (i) pH around 9.25 |
| (b) Ammonium Hydroxide and Ammonium Chloride | (ii) pH around 4.75 |
| (c) Hydrolysis of Salt from Weak Acid and Weak Base | (iii) pH = 7 + ½ (pK a – pK b) |
| (d) Buffer Solution Preparation | (iv) Requires knowledge of pK a and pK b |
a-ii, b-i, c-iii, d-iv
a-i, b-ii, c-iv, d-iii
a-iv, b-ii, c-i, d-iii
a-ii, b-iv, c-i, d-iii
Correct Answer
Detailed Explanation
The acetic acid and sodium acetate form a buffer solution at pH around 4.75, while ammonium hydroxide and ammonium chloride form a buffer around pH 9.25. Hydrolysis of salts from weak acids and bases can be described by the equation pH = 7 + ½ (pK a – pK b). Knowledge of pK a and pK b is essential for preparing buffer solutions.
Found an issue with this question?
Related Questions
More from
Assertion (A): For a dibasic acid H2X, the equilibrium constant for the first ionization step (Ka1) is generally greater than that for the second ioni...
Assertion (A): The solubility of a sparingly soluble salt is affected by the presence of a common ion. | Reason (R): The solubility product constant (...
Match Column-I with Column-II. Column-I Column-II (a) K c for H 2 + I 2 2HI (i) 57.0 (b) K c for N 2 + O 2 2NO (ii) 4.8 × 10 –31 (c) K...