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Consider the insoluble compound iron(II) sulfide , Fes. The iron(II) ion also forms a complex with cyanide ions. Write a bala

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ON O Reaction: Fes (8) + ben (aq) = Fe (en) Cey+ $2 (aa). k = [Fe(en) ][92-] 1 [fes] [EN] Fes (s) = Fe2+ (aq) + $2(aq) kas the value of equillibrium constant increases from solubility constant Ksp to Reaction quoteint K, this proves that solubility will increase on addition of cyanide ions as K increased.

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