Harga Ph larutan NH3 0,1 M (Kb = 1,0 x 10^-5) adalah

NH3 = 0,1 M
Kb = 10^-5

[OH-] = √ Kb × Mb
= √ 10^-5 × 10^-1
= √ 10^-6
= 10^-3

pOH = -log OH-
=-log 10^-3
= 3

pH = 14 - 3
pH = 11