Chemistry

Chemistry

Problem

The ferrous ion in a given sample is detected by the formation of a white precipitate on the addition of a potassium ferrocyanide solution to it. The precipitate has the constitutional formula. a. K2FeII[FeII(CN)6]\text{K}_2\text{Fe}^{\text{II}}[\text{Fe}^{\text{II}}(\text{CN})_6] b. K2FeIII[Fe(CN)6]\text{K}_2\text{Fe}^{\text{III}}[\text{Fe}(\text{CN})_6] c. KFeIII[FeII(CN)6]\text{KFe}^{\text{III}}[\text{Fe}^{\text{II}}(\text{CN})_6] d. KFeII[FeIII(CN)6]\text{KFe}^{\text{II}}[\text{Fe}^{\text{III}}(\text{CN})_6]

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