Jawabanmu

2014-01-22T15:02:52+07:00
Ph = -log [H+]
3 = -log 1. 10 ^-3
[H+] = 1.10^-3

[H+] = akar ka . m
1.10^-3 = akar ka . 1. 10^-1 (^2)
1.10^-6 = ka. 1.10^-2
1.10^-4 = ka :)