When acetic acid and K_4[Fe(CN)_6] are added | vedclass

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Question

(B) The reaction between a copper salt (e.g.,$CuSO_4$) and potassium ferrocyanide $(K_4[Fe(CN)_6])$ in the presence of acetic acid results in the form

Vedclass · Accepted Answer

Copper ferrocyanide

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(B) The reaction between a copper salt (e.g.,$CuSO_4$) and potassium ferrocyanide $(K_4[Fe(CN)_6])$ in the presence of acetic acid results in the formation of copper ferrocyanide $(Cu_2[Fe(CN)_6])$.This compound appears as a characteristic chocolate-brown precipitate.The chemical equation is: $2Cu^{2+} + [Fe(CN)_6]^{4-} \rightarrow Cu_2[Fe(CN)_6] \downarrow$ (chocolate-brown).

When acetic acid and $K_4[Fe(CN)_6]$ are added to a copper salt solution,which substance forms a chocolate-brown precipitate?

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