A weak organic acid (pKa = 4.82) is being studied as a potential broadleaf herbicide. One aspect of the study includes testing for its presence in…
A weak organic acid (pKa = 4.82) is being studied as a potential broadleaf herbicide. One aspect of the study includes testing for its presence in water samples taken from a run-off of a field. The acid has a distribution ratio of 62 between water and chloroform at a pH of 3.42.
a. Using 30.0 mL of chloroform, what fraction of the compound will be extractedfrom a 50.0 mL field sample at pH = 3.42?
b. What fraction of the acid in the 50.0 mL sample would be extracted, again at pH3.42, using three 10.0 mL portions of chloroform?
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Order Paper Nowc. If the pH of the solution was changed to 6.00, what fraction would be extractedusing 30.0 mL of chloroform with a 50.0 mL field sample?
d. Qualitatively, predict what effect a lower pH would have on the extraction