Jawabanmu

2014-06-10T15:07:54+07:00
Mg = n/Vtot = 5/100 = 0,05 M

[H+] = √Kw/Kb x Mg x n
       = √10^-14/10^-5 x 5.10^-5 x 1
       = √5.10^-5,5
pH = 5,5 - log √5