Which of the following statement about complexes that form between metal ions and EDTA in aqueous solution is true? Metal-EDTA complexes have an equilibriuma. concentration that is independent of pH. b Metal-EDTA complexes are stable in acidic . solutions than in basic solutions. c Metal-EDTA complexes are stable in basic solutions than in acidic solutions. d Metal-EDTA complexes are often 2:1 ind. stoichiometry.

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