Jawabanmu

2014-04-09T11:48:30+07:00
[H+] = akar Ka.Ma = akar 2 x 10 pangkat -5 . 4 = 8 x 10 pangkat -5 Ph = - log 8 x 10 pangkat -5 = 5 - log 8 [OH-] = 2 x 0, 5 = 1 poh = - log 1 = 0 Ph = 14