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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
A violet colour compound is formed in detection of S in a compound:
  • ✓
    $\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$
  • B
    $\mathrm{Na}_3\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$
  • C
    $\mathrm{Na}_2\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$
  • D
    $\mathrm{Na}\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$
✓

Answer

Correct option: A.
$\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$
$\mathrm{Na}_2 \mathrm{S}+\mathrm{Na}_2\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NO}\right] \rightarrow \mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]($ Violet Color Compond $)$.

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