hitunglah volume larutan untuk membuat 100 mL larutan penyangga dengan pH = 6 dari NaOH 0,1 M dan CH3COOH 0,1 M! (Ka CH3COOH = 1 x 10-5)!

Dik : ph = 6 –> H+ = 10^-6
m naoh = 0,1 m
m ch3cooh = 0,1 m
v ch3cooh = 100 ml
ka ch3cooh = 10^-5
dit : v naoh ?
jawab :
mol ch3cooh = 0,1 . 100 = 10
H+ = ka . mol ch3cooh/mol naoh
10^-6 = 10^5 . 10/×
×=100 ,mol naoh = 100 mmol

v naoh = mol / m
= 100 / 0.1 = 1000 ml / 1 liter

maaf kao salah