1) Fe+2HCl=FeCl2+h2
FeCl2+2NaOH=Fe(OH)2+2NaCl
Fe(OH)2=FeO+H20
FeO+H2=Fe+H2O
Fe+Hg(NO3)2=Fe(NO3)2+Hg
2) 2Fe+3Cl2=2FeCl3
FeCl3+3KOH=Fe(OH)3+3KCl
2Fe(OH)3=Fe2O3+3H2O
Fe2O3+3H2=2Fe+3H2O
4(2)Fe+3(1)O2=2Fe2O3(2FeO)
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Answers & Comments
1) Fe+2HCl=FeCl2+h2
FeCl2+2NaOH=Fe(OH)2+2NaCl
Fe(OH)2=FeO+H20
FeO+H2=Fe+H2O
Fe+Hg(NO3)2=Fe(NO3)2+Hg
2) 2Fe+3Cl2=2FeCl3
FeCl3+3KOH=Fe(OH)3+3KCl
2Fe(OH)3=Fe2O3+3H2O
Fe2O3+3H2=2Fe+3H2O
4(2)Fe+3(1)O2=2Fe2O3(2FeO)