Carbon monoxide cab be prepared in the laboratory by the action of conc. `H_(2)SO_(4)` on

Options

A. `NaCN`
B. `Fe(CN)_(2)`
C. `K_(3)[Fe(CN)_(6)]`
D. `K_(4)[Fe(CN)_(6)]`

Answer

D

Explanation

`{:(K_(4)[Fe(CN)_(6)]+3H_(2)SO_(4)to2K_(2)SO_(4)+FesO_(4)+6HCN),([HCN+2H_(2)OtoHCOOH+NH_(3)]xx6),([HCOOH to H_(2)O+CO]xx6),([2NH_(3)+H_(2)SO_(4)to(NH_(4))_(2)SO_(4)]xx3),(bar(K_(4)[Fe(CN)_(6)]+6H_(2)OSO_(4)+6H_(2)Oto 2K_(2)SO_(4)+FeSO_(4)+3(NH_(4))_(2)SO_(4)+6CO)):}`