A one litre solution contains 0.08 mole of acetic acid (Ka = 1.75 × 10–5). To this solution, 0.02 mole of NaOH is added. Then the pH of resulting solution is [log 1.75 = 0.243]
Following reaction will occur
CH3COOH | NaOH | CH3COONa H2O | ||
t = 0 | 0.08 | 0.02 | 0 0 | |
0.08 - 0.02 | 0.02 - 0.02 = 0 | 0.02 0 | ||
=0.06 | = 0 |
PH of an acidic buffer is given as