Sebanyak 100 ml larutan CH3COOH 0,2 M dicampur dengan 100 ml larutan KOH 02 M. Tentukan pH larutan-larutan itu sebelum dan sesudah dicampurkan (Ka CH3COOH=1X10^

pH sebelum dicampurkan:
KOH = 0.2 M
(OH-) = 0.2M = 2×10^-1
pH KOH = 13+log2

CH3COOH
H+ = √Ka.M
= √ 10^-5 × 0.2 = 1.4 × 10^-3
pH = 3 + log 1.4
KOH + CH3COOH --> CH3COOK + H2O
KOH = 20mmol
CH3COOK = 20mmol
M garam = 20mmol/200mL = 0.1 M
(Hidrolisis)
(OH-) = √Kw/Ka × M
= √10^-14/10^-5 × 0.1M
= √10^-10 = 10^-5
pH = 14 - 5 = 9