Red colour complex ion formed on adding FeCl3 to S.E. (sodium extract) when N and S both are present in organic compound is

Question

Red colour complex ion formed on adding FeCl3 to S.E. (sodium extract) when N and S both are present in organic compound is (A) [Fe(CN)6]4- (B) [Fe(CNS)]2+ (C) [Fe(CNS)2]+ (D) [Fe(CN)6]3-

Tardigrade Admin · Accepted Answer

Na + C + N + S xrightarrowΔ underset textSodium thiocyanate (In S.E.)CH3COOH NaCNS + FeCl3 arrow + underset textBlood red colour[Fe(CNS)]Cl)2 + NaCl

Q. Red colour complex ion formed on adding $F e C l_{3}$ to S.E. (sodium extract) when N and S both are present in organic compound is

$[F e (CN)_{6}]^{4 -}$

$[F e (CNS)]^{2 +}$

$[F e (CNS)_{2}]^{+}$

$[F e (CN)_{6}]^{3 -}$

$N a + C + N + S Δ Sodium thiocyanate (In S.E.) C H_{3} COO H$
$N a CNS + F e C l_{3} \to + Blood red colour [F e (CNS)] Cl) 2 + N a Cl$

Q. Red colour complex ion formed on adding FeCl3​ to S.E. (sodium extract) when N and S both are present in organic compound is

[Fe(CN)6​]4−

[Fe(CNS)]2+

[Fe(CNS)2​]+

[Fe(CN)6​]3−