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-000-CH2 H2C-coo N-CH2-CH2-N: TOOC—CH2 H2C-coo EDTA+ (or Y4-) EDTA is a hexaprotic system with the pKvalues: pKai = 0.00, PK

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Answer #1

pH = 3.05 : \alpha Y4+ = 2.69 x 10-11

pH = 10.55 : \alpha Y4+ = 0.602

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