Bài 1: Hoàn thành chuỗi chuyển hóa sau:
a. FeCl3 -> Fe(OH) 3 -> Fe2O3 -> Fe2(SO4 )3 -> FeCl 3
b. Al(OH)3 -> Al2O3 -> Al2(SO4)3 -> Al(OH)3 -> AlCl3 ->MgCl2 -> Mg(OH)2 ->MgSO4 -> Mg(NO3 ) 2
c. Ba -> BaO -> Ba(OH) 2 -> BaCO 3 -> BaCl 2 -> Ba(NO3) 2 -> BaSO 4
d. CuSO 4 -> CuCl 2 -> Cu(OH) 2 -> CuO -> Cu-> CuSO 4 -> Cu(NO3 ) 2
e/ Na -> Na2O -> NaOH -> Na2SO3 -> NaCl-> NaOH -> Fe(OH)3 -> Fe2O3 -> Fe2(SO4)3 -> FeCl3 -> Fe(NO3)3