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Chemistry Question on d block elements

Which series of reactions correctly represents chemical relations related to iron and its compound?

A

Fe−>[dil.H2SO4]FeSO4−>[H2SO4,O2]Fe2(SO4)3−>[heat]FeFe {->[dil. H_2SO_4]} FeSO_4 {->[H_2SO_4, O_2]} Fe_2(SO_4)_3 {->[\text{heat}]}Fe

B

Fe−>[O2,heat]FeO−>[dil.H2SO4]Fe2(SO4)−>[heat]FeFe {->[O_2, \text{heat}]} FeO {->[dil. H_2SO_4]}Fe_2(SO_4) {->[\text{heat}]} Fe

C

Fe−>[Cl2,heat]FeCl3−>[heat, air]FeCl2−>[Zn]FeFe {->[Cl_2, \text{heat}]} FeCl_3 {->[\text{heat, air}]} FeCl_2 {->[Zn]}Fe

D

Fe−>[O2,heat]FeO4−>[CO,600∘C]FeO−>[CO,700∘C]FeFe {->[O_2, \text{heat}]} FeO_4 {->[CO, 600^{\circ}C]} FeO {->[CO, 700^{\circ}C]} Fe

Answer

Fe−>[O2,heat]FeO4−>[CO,600∘C]FeO−>[CO,700∘C]FeFe {->[O_2, \text{heat}]} FeO_4 {->[CO, 600^{\circ}C]} FeO {->[CO, 700^{\circ}C]} Fe

Explanation

Solution

In E (1) FeCl3FeCl _{3} can't be reduced when heated vin air rather oxidation should occur. In E (3) Fe2(SO4)3Fe _{2}\left( SO _{4}\right)_{3} can't be converted to Fe on heating, instead oxide of Fe will be formed:

Fe2(SO4)3→ΔFr2O3+3SO2Fe _{2}\left( SO _{4}\right)_{3} \stackrel{\Delta}{\rightarrow} Fr _{2} O _{3}+3 SO _{2}

In E (4), FeO4FeO _{4} can't be converted to Fe on heating , instead oxide (s) will be formed.