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A 55.0 mL solution of 0.0200 M triethanolamine is extracted with 115 mL of solvent. The distribution constant for the reaction is 4.00 and


A 55.0 mL solution of 0.0200 M triethanolamine is extracted with 115 mL of solvent. The distribution constant for the reaction is 4.00 and the pKa of the protonated form of triethanolamine is 7.762. Calculate the concentration of triethanolamine remaining in the aqueous phase at pH = 6.50 and pH = 8.50. [triethanolamine] at pH = 6.50: M [triethanolamine] at pH = 8.50: M

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