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Question

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Fe--->FeCl3--->Fe(OH)3--->Fe2(SO4)3--->Fe--->Fe3O4--->Fe--->Fe4C3

Answer 1

2Fe+6HCl=2FeCl3 +3H2

FeCl3+6H2O=Fe(OH)3 + 3HCl

2Fe(OH)3+3H2SO4=Fe2(SO4)3+6H2O

Fe2(SO4)3+3H2=3H2SO4+2Fe

Fe+O2=Fe3O4

Fe3O4+4H2=4H2O+3Fe

8Fe+3C2=2Fe4C3

Answer 2

2Fe+3Cl2=2FeCl3

 FeCl3+3NaOH=Fe(OH)3+3NaCl

2Fe(OH)3+3H2SO4=Fe2(SO4)3+6H2O

  Fe2(SO4)3+2Al=Al2(SO4)3+2Fe

3Fe+2O2=Fe3O4

 Fe3O4+4H2=3Fe+4H2O