Jawabanmu

2014-06-11T15:40:47+07:00
NNaOH = V.M = 40 . 0,1 = 4 nCH3COONa = V.M = 80 . 0,5 = 40 H+ = nCH3COONa - nNaOH/ Volume campuran = 40-4/120 = 0,3 pH = 1-log3