Jawabanmu

2014-06-17T11:35:28+07:00
PH = 9
pOH = 5
OH- = 10^-5


OH- = Kb (basa lemah/asam konjgasi)
10^-5 = 2x 10^-5 ( 500M/50)
50 = 1000M
M = 50/1000 = 0,05 M
1 5 1