... nNaOH nH du 4nNa [ Al (OH )4 ] 3nAl (OH )3 nNaOH 0, 04 4.0, 01 3.0, 01 0 ,11 mol VddNaOH 0,1M 1, 1l áp án B Ví d 5: Cho V(l) dung d ch NaOH 2M thu đ c dung d ch (0 ,1 Al2(SO4)3; ... 2,568 B 1, 56 C 4 ,90 8 D 5,604 H ng d n Th t ph n ng : 1, OH- + H+ H2O 0,25 0,08 2, 3OH- + Fe3+ Fe (OH) 3 0 ,17 0,024 0,024 .10 7 3, 3OH- + Al3+ Al (OH) 3 m=4 ,90 8 0, 098 0,032 0,032 0, 096 78.0,03 ... a Al3+ v i OH- A 0,8l B 1, 1l C 1. 2l D 1, 5l H ng d n 3 0, 02 Al 0, 02 Al Na[ Al (OH )4 ] 0, 01 NaOH dung dich A t0 Al2O3 0, 04 H du Al (OH )3 0,1H 0, 01...