The Partition Coefficient Is Modified When the PH of the Aqueous

question 11

Multiple Choice

The partition coefficient is modified when the pH of the aqueous phase is adjusted or when a chelating agent is added.The partition coefficient is renamed the distribution coefficient.What is the impact on the extraction of a weak acid into an organic solvent as the pH of the aqueous phase increases?

• A)As the pH increases the value of D decreases and the percentage weak acid left in the aqueous phase decreases.
• B)As the pH increases the value of D increases and the percentage weak acid left in the aqueous phase increases.
• C)As the pH increases,the value of D decreases and the percentage weak acid left in the aqueous phase decreases.
• D)As the pH increases the value of D increases and the percentage weak acid left in the aqueous phase decreases.
• E)As the pH increases the value of D decreases and the percentage weak acid left in the aqueous phase increases.

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