14. Jika 2 L larutan CH3COONa memiliki pH=8, Ka CH3COOH=10-5 dan Mr CH3COONa=82, maka jumlah garam yang terlarut

pH = 8
pOH = 14 - 8
pOH = 6

[OH-] = 10^-6

[OH-] = √Kw/Ka . [anion]
10^-6 = √10^-14 / 10^-5 . M
10^-12 = 10^-9 . M
M = 10^-12 / 10^-9
M = 10^-3
M = 0,001

n = M x V
n = 0,01 . 2L
n = 0,02 mol

gr = n . Mr
gr = 0,02 . 82
gr = 1,64 gran