Answered: a. Find the equilibrium concentrations…

a. Find the equilibrium concentrations of SA in the aqueous and the non-aqueous phases. b. Calculate the partition coefficient (K) for the salicylic acid.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter33: High-performance Liquid Chromatography

Section: Chapter Questions

Problem 33.2QAP

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Question

The absorbance of a 0.5 mM aqueous salicylic acid solution was 0.925. This solution was extracted with 10% ethyl acetate/hexane solution. The absorbance of the extracted aqueous salicylic acid solution at equilibrium was 0.670.

a. Find the equilibrium concentrations of SA in the aqueous and the non-aqueous phases.

b. Calculate the partition coefficient (K) for the salicylic acid.

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