Question

[Lê Bảo Yến]

1. Hoàn thành sơ đồ pư sau:

a) Fe(OH)3 -> Fe2O3 -> FeCl3 -> Fe(OH)2

b) CaCO3 -> CaO -> CaCl2 -> Ca(NO3)2 -> CaCO3 -> Ca(NO3)2

c) FeO -> FeCl2 -> Fe -> FeCl3 -> Fe(OH)3 -> Fe2O3

2. Nhận biết:

a) Na2SO4, NaCl, NaOH, Na2CO3

b) CuSO4, Al2(SO4)3, FeSO4, MgSO4

c) HCl, H2SO4, Na2SO4, NaCl, NaOH, Na2CO3