Question

Which statement(s) are true when aqueous sodium hydroxide is added to the filtrate solution (that has been transferred to the separatory funnel) during Chemically Active Extraction of Benzoic Acid? Select all that apply.

a. Benzoic acid was converted into water-soluble benzoate ions.
b. As the benzoate ion was formed, hydroxide ion was consumed.
c. An aqueous solution with a low pH was added to the filtrate.
d. An aqueous solution with a high pH was added to the funnel.
e. Hydroxide ions protonated benzoic acid molecules.
f. Immiscible liquids are now present in the separatory funnel

Answer 1

When aqueous sodium hydroxide is added to the filtrate solution during the Chemically Active Extraction of Benzoic Acid, benzoic acid is converted into water-soluble benzoate ions. As the benzoate ion is formed, hydroxide ion is consumed. An aqueous solution with a high pH is added to the funnel.

Step-by-step explanation:

When aqueous sodium hydroxide is added to the filtrate solution during the Chemically Active Extraction of Benzoic Acid, the following statements are true:

1. Benzoic acid was converted into water-soluble benzoate ions. This is because sodium hydroxide acts as a base and reacts with benzoic acid to form sodium benzoate, which is water-soluble.
2. As the benzoate ion was formed, hydroxide ion was consumed. This is because hydroxide ions from sodium hydroxide react with benzoic acid to form water.
3. An aqueous solution with a high pH was added to the funnel. This is because sodium hydroxide is a strong base and increases the pH of the solution.