The citrate ion is a tridentate ligand that forms a strong complex with ferric ion: Fe^3+ + 2Cit^3- <=> Fe(Cit)2^3- A metal ion buffer solution was prepared by adding 2.5g of Na3Cit.2H2O (MW = 294.1) and 1 g of Fe(NO3)3.9H2O (MW=404.01) to a 500ml volumetric flask. The flask was filled to the mark and mixed throughly after the reagents dissolved. The pFe = 18.56, Calculate Kf.

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Coordination Chemistry

It is a part of chemistry, in which the study of compounds that have central atoms surrounded by molecules or ions, known as ligand, is known as coordination chemistry.