Make up the reaction equation: 1) Fe – FeSO4- Fe2 (SO4) 3- Fe (OH) 3- Fe (NO3) 3

| September 6, 2021 | education

Make up the reaction equation: 1) Fe – FeSO4- Fe2 (SO4) 3- Fe (OH) 3- Fe (NO3) 3 2) Fe3O4- Fe- FeCl2- FeCl3 3) FeSO4- Fe (OH) 2- Fe (OH) 3- Fe2O3- Fe

# 1.

Fe + H2SO4 = FeSO4 + H2.

FeSO4 + 2H2SO4 conc = Fe2 (SO4) 3 + SO2 + 2H2O.

Fe2 (SO4) 3 + 6NaOH = 2Fe (OH) 3 + 3Na2SO4.

Fe (OH) 3 + 3HNO3 = Fe (NO3) 3 + 3H2O.

No. 2.

Fe2O3 + 3H2 = 2Fe + 3H2O.

Fe + 2HCl = FeCl2 + H2.

2 FeCl2 + Cl2 = 2FeCl3.

No. 3.

FeSO4 + 2NaOH = Fe (OH) 2 + Na2SO4.

4Fe (OH) 2 + O2 + 2H2O = 4Fe (OH) 3.

In water in the presence of oxygen, iron hydroxide is rapidly oxidized to form iron (III) hydroxide.

Fe (OH) 3 is an insoluble base; when heated, it decomposes to oxide and water.

2Fe (OH) 3 = Fe2O3 + 3H2O.

Iron can be reduced from its oxides by reducing agents: H2, C, CO2, Al.

The reduction of metals from their oxides with aluminum is called aluminothermy.

Fe2O3 + 2Al = Al2O3 + 2Fe.



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