In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to :

Question

In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to : (A) Na 3 Fe ( CN )6 (B) Na 3[ Fe ( CN )5 NOSNa ] (C)  Fe(CNS)3 (D) none of these

Tardigrade Admin · Accepted Answer

With sodium nitroprusside solution, the sodium extraction gives a purple colour of sodium thionitro prusside.

(present in sodium extract) N a_{2} S_{(a q)} + (sodium nitroprusside) N a_{2} [F e (CN)_{5} NO]

⟶ Purple colour (Sodium thio nitro prusside) N a_{4} [F e (CN)_{5} NOS]

Q. In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to :

$N a_{3} F e (CN)_{6}$

$N a_{3} [F e (CN)_{5} NOSN a]$

$F e (CNS)_{3}$

none of these

With sodium nitroprusside solution, the sodium extraction gives a purple colour of sodium thionitro prusside.
$(present in sodium extract) N a_{2} S_{(a q)} + (sodium nitroprusside) N a_{2} [F e (CN)_{5} NO]$
$⟶ Purple colour (Sodium thio nitro prusside) N a_{4} [F e (CN)_{5} NOS]$

Q. In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to :

Na3​Fe(CN)6​

Na3​[Fe(CN)5​NOSNa]

Fe(CNS)3​

none of these

With sodium nitroprusside solution, the sodium extraction gives a purple colour of sodium thionitro prusside. (present in sodium extract)Na2​S(aq)​​+(sodium nitroprusside)Na2​[Fe(CN)5​NO]​ ⟶Purple colour (Sodium thio nitro prusside)Na4​[Fe(CN)5​NOS]​

$N a_{3} F e (CN)_{6}$

$N a_{3} [F e (CN)_{5} NOSN a]$

$F e (CNS)_{3}$

With sodium nitroprusside solution, the sodium extraction gives a purple colour of sodium thionitro prusside.
$(present in sodium extract) N a_{2} S_{(a q)} + (sodium nitroprusside) N a_{2} [F e (CN)_{5} NO]$
$⟶ Purple colour (Sodium thio nitro prusside) N a_{4} [F e (CN)_{5} NOS]$