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(C) The reaction involves the dissolution of a precipitate to form a clear,soluble complex.$Fe(CN)_2$ is a precipitate (often light green or white dep

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$C$. for clear/colourless solution

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(C) The reaction involves the dissolution of a precipitate to form a clear,soluble complex.$Fe(CN)_2$ is a precipitate (often light green or white depending on purity).When $4KCN$ is added,it reacts with $Fe(CN)_2$ to form the soluble complex $K_4[Fe(CN)_6]$,which is potassium ferrocyanide.This complex is highly soluble in water and forms a clear,colourless solution.Therefore,the reaction represents the formation of a clear/colourless solution,which corresponds to $C$.

Assign $A, B, C, D$ from the given type of reaction.
$4KCN + Fe(CN)_2 \downarrow \longrightarrow K_4[Fe(CN)_6]$

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Assign $A, B, C, D$ from the given type of reaction.$4KCN + Fe(CN)_2 \downarrow \longrightarrow K_4[Fe(CN)_6]$