larutan 100ml CH3COOH 0,15 (Ka CH3COOH=10^-5) dicampurkan dengan 50ml larutan NaOh 0,2 maka pH campuran adalah

ch3cooh+naoh->ch3coona+h2o
15. 10
10. 10. 10. 10
5. -. 10. 10
[H]=ka mmol asam /mmol garam
=10*-5×5/10
=10*-5×5.10*-1
=5×10*-6
pH=-log [H]
=- log 5×10*-6
=6- log5