Question 1

SCQMEDIUM

During sodium nitroprusside test of sulphide ion in an aqueous solution, one of the ligands coordinated to the metal ion is converted to

(A)

NOSβˆ’NOS^-

(B)

SCNβˆ’SCN^-

(C)

SNOβˆ’SNO^-

(D)

NCSβˆ’NCS^-

Detailed Solution

Sodium nitroprusside has the formula Na2[Fe(CN)5NO]Na_2[Fe(CN)_5NO]. In this complex, the nitrosyl ligand is present as NO+NO^+. When it reacts with the sulphide ion (S2βˆ’S^{2-}) in an aqueous solution, a purple-colored complex is formed:

ightarrow [Fe(CN)_5NOS]^{4-}$$ In this process, the $NO^+$ ligand reacts with $S^{2-}$ to form the thionitrite ligand ($NOS^-$). Therefore, the ligand is converted to $NOS^-$.
Free Exam

Boost Your Exam Preparation!

Move beyond just reading solutions. Access our comprehensive Test Series, original Mock Tests, and interactive learning modules. Many premium tests are completely free!

  • Original Mocks & Regular Test Series
  • Real NTA-like Interface with Analytics
  • Many Free Tests Available