Sebanyak 16,4gram CH3COONa dilarutkan dalam air hingga volume 500ml. Hitung ph larutan tersebut (Kamu=10^-5) AR C=12 H=1 O=16 NA=23?

[CH3COONa] = 16,4/82 x 1000/500
= 0,4 M
OH- = akar Kw/Ka [G]
= akar 10^-14/10^-5 x 4.10^-1
= akar 4.10^-10
= 2.10^-5M
pOH = 5 - log 2
pH = 9 + log 2