Hoàn thành dãy hóa học
B/Na -> NaOH -> Na2SO4 -> NaOH -> Na₂CO3 -> NaCl -> NaNO3.
CIAI
C/ Al-> Al2O3 -> Al2(SO4)3 -> Al(OH)3 -> NaAlO₂ -> Al(OH)3 -> AlCl3 -> Al(NO3)3.
D/ CaCO3 -> CaCl₂ -> CaCO3 -> CaO -> Ca(OH)2 -> Ca(NO3)2.
E/ Al-> AIC13 -> Al(OH)3 -> Al2O3 -> Al2(SO4)3 -> Al(OH)3
NaAlO₂
F/Al -> Fe -> FeCl3 -> Fe(OH)3 -> Fe₂O3 -> Fe₂(SO4)3.
G/ Sắt (III ) hidroxit -> Sắt (III) oxit -> Sắt -> Sắt (II) Clorua -> Sắt (II) Sùnfat -> Sắt
(II) Nitrat.