(1)A.Na 2CO 3B.AgNO 3C.Fe 2(SO 4) 3D.AlCl 3 E.Ba(OH) 2
(2)CO 3 2-+H 2O
HCO 3 -+OH -
(3)③F
e+2Fe 3+==3Fe 2+; ④Al 3++4OH - ==AlO 2 -+2H 2O
(1)A.Na 2CO 3B.AgNO 3C.Fe 2(SO 4) 3D.AlCl 3 E.Ba(OH) 2
(2)CO 3 2-+H 2O
HCO 3 -+OH -
(3)③F
e+2Fe 3+==3Fe 2+; ④Al 3++4OH - ==AlO 2 -+2H 2O