The correct formula of potassium ferricyanide | vedclass

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Question

(B) Potassium ferricyanide is a coordination compound with the $IUPAC$ name potassium hexacyanidoferrate$(III)$.In this complex,the iron atom is in th

Vedclass · Accepted Answer

$K_3[Fe(CN)_6]$

Vedclass · Answer

(B) Potassium ferricyanide is a coordination compound with the $IUPAC$ name potassium hexacyanidoferrate$(III)$.In this complex,the iron atom is in the $+3$ oxidation state $(Fe^{3+})$.The cyanide ligand $(CN^-)$ has a charge of $-1$.To balance the charge of the complex $[Fe(CN)_6]^{x}$,we have $x + 6(-1) = -3$,so $x = -3$.Therefore,the complex ion is $[Fe(CN)_6]^{3-}$.To neutralize this,three potassium ions $(K^+)$ are required.Thus,the formula is $K_3[Fe(CN)_6]$.

The correct formula of potassium ferricyanide is:

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