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TS EAMCET · Chemistry · Coordination Compounds

Which one of the following gives Prussian blue colour?

  1. A \(\mathrm{Fe}_2\left[\mathrm{Fe}(\mathrm{CN})_6\right]\)
  2. B \(\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]\)
  3. C \(\mathrm{Fe}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3\)
  4. D \(\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3\)

Step-by-step Solution

Detailed explanation

Ferric salts (such as \(\mathrm{FeCl}_3\) ) form Prussian blue (blue ppt or colouration) with potassium ferrocyanide.…