Jawabanmu

2014-06-04T13:14:50+07:00
POH = 9 = -log 10^-5 = 10^-5
mol NH4OH = 100 x 0.5 = 50 mmol

pH = Kb x b/g
10^-5 = 10^-5 x 50/ 0,5 Vg (10^-5 di ruas kanan dan kiri sama-sama dicoret)
Vg = 50/0,5 atau 50 x 2/1
= 100 ml