Fe => Fe2O3 => FeCl => Fe(OH)3 => Fe2(SO4)3

Question

Fe => Fe2O3 => FeCl => Fe(OH)3 => Fe2(SO4)3

Answer 1

Fe+O2=Fe2O3

Fe2O3+HCI= FeCl+H2O

 FeCl+NAOH= Fe(OH)3+NACI

 Fe(OH)3+H2SO3=Fe2(SO4)3+H2O