额,刚才看错了先加过量NaOH：Al3+ +3OH- ==Al(OH)3↓；Al(OH)3+OH- ==AlO2- +2H2O总：Al3+ +4OH- ==AlO2- +2H2OFe3+ +3OH- ==Fe(OH)3↓ 过滤出Fe(OH)3,加盐酸：Fe(OH)3+3H+ ==Fe3+ +3H2O滤液中加过量HCl：AlO2-+H+ +...