Which series of reactions correctly represents chemical rections related to iron and its compounds ?

Options

A. `Fe overset (CI_(2)) underset (heat) rarr FeCI_(3) overset (heat) underset (air) rarr FeCI_(2) overset (Zn) rarr Fe`
B. `Fe overset (O_(2)) underset (heat) rarr Fe_(3)O_(4) overset (CO) underset (600^(@)C) rarr FeO overset (CO) underset (700^(@)C) rarr Fe`
C. `Fe overset (dil) underset (H_(2)SO_(4)) rarr FeSO_(4) overset (H_(2)SO_(4)) underset (O_(2)) rarr Fe_(2)(SO_(4))_(3) overset (heat) rarr Fe`
D. `Fe overset (O_(2)) underset (heat) rarr FeO overset (dil) underset (H_(2)SO_(4)) rarr FeSO_(4) overset (heat) rarr Fe`

Answer

B

Explanation

In Eq. (1) `FeCI_(3)` can't be reduced when heated vin air rather oxidation should occur. In Eq. (3) `Fe_(2)(SO_(4))_(3)` can't be converted to Fe on heating , instead oxide of Fe will be formed:
`Fe_(2)(SO_(4))_(3)` `overset (Delta) rarr` `Fr_(2)O_(3) + 3SO_(2)`
In Eq. (4), `FeO_(4)` can't be converted to Fe on heating , instead oxide (s) will be formed.
`FeSO_(4)` . `7H_(2)O` `overset (Delta) underset (-6H_(2)O) rarr` `FeSO_(4)` . `H_(2)O` `oveset (Delta) underset (-H_(2)O) rarr` `FeSO_(4)` `overset (Delta) rarr` `Fe_(2)O_(3) + SO_(2) + SO_(3)`
Hence, Eq (2) is correct.