... 0,10-x x x K H2O [NH3 ][H3O+ ] x.x 1 0-1 4 K= = = = = 5,6.1 0-1 0 + -5 [NH ] (0,1 0- x) Kb 1,8.10 vi 0,10 x 0,1 ta c: x = 5,5.1 0-1 1 x = 7,4.1 0-6 (rừ rng l 0,10 7,4.1 0-6 0,10) pH = - lg[H+ ]= -lg ... ]=[ OH- ]=1 0-7 mol/l u c gi l cú mụi trng trung tớnh Khi dung dch cú nng [ H + ] > 1 0-7 mol/l v [ OH- ] < 1 0-7 mol/l thỡ c gi l cú mụi trng axit Khi dung dch cú [ H + ] < 1 0-7 v [ OH- ] > 1 0-7 ... 1,77.1 0-5 4,758 0,0001 1,75.1 0-5 4,756 0,001 1,72.1 0-5 7,766 0,001 1,79.1 0-5 4,748 0,005 1,58.1 0-5 4,801 0,005 1,93.1 0-5 4,713 0,010 1,43.1 0-5 4,844 0,010 2,14.1 0-5 4,670 0,050 0,583.1 0-5 5,234...