Which of the following is obtained by reaction of potassium ferrocyanide with conc. H 2 SO 4

Question

Which of the following is obtained by reaction of potassium ferrocyanide with conc. H 2 ​ SO 4 ​

TestHub · Accepted Answer

Potassium ferrocyanide K₄[Fe(CN)₆] on treatment with concentrated H₂SO₄ liberates carbon monoxide (CO) due to hydrolysis and decomposition of the cyanide groups.

The reaction is:

$K_{4} [F e (CN)_{6}] + 6 H_{2} S O_{4} + 6 H_{2} O \to 6 CO + 3 (N H_{4})_{2} S O_{4} + F e S O_{4} + 2 K_{2} S O_{4}$

Hence, the correct product is CO.

Answer: (B)

Chemistry - Complete Pblock- Question with Solution | TestHub

Options:

Doubts & Discussion