CHEM 2364 Final Alfonso Exam with
Actual Answers 2025-2026 Updated.
In a certain scenario, you have a separatory funnel containing two unknown colorless, clear, and
immiscible layers. How would you determine which is is the organic layer and which is the
aqueous layer?
Read the options carefully below. Select the answer that accomplishes this. - Answer
Remove a small amount of the bottom layer, and add a few drops of water to see if it is miscible.
Which of the following statements are correct regarding the use of a separatory funnel? -
Answer Venting a separatory funnel is important in part because the acid-base reactions can
generate gas products, which creates an explosion hazard.
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Wash the organic layer - Answer NaCl (brine)
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Remove water from the organic layer - Answer MgSO4
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Extract acetaminophen into the aqueous layer - Answer KOH
Which answer choice correctly explains partitioning (seen in Exps. 3, 4, and 5)? - Answer
When a molecule travels to the layer (or phase) that it is most attracted to due to similar
intermolecular forces.
Which reagent(s) can be used to deprotonate acetaminophen in Exp. 5? Select all that are
correct. - Answer KOH
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
Protonate aspirin or acetaminophen - Answer HCl
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
, Extract aspirin into the aqueous layer - Answer K2HPO4
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
Organic layer solvent - Answer ethyl acetate
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> K2HPO4 -> what goes in the 1st organic
layer - Answer caffeine (C)
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> K2HPO4 -> what goes in the 1st aq layer -
Answer acetylsalicylate [ AA(ion) ]
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> KOH -> what goes in the 2nd organic layer -
Answer caffeine
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> KOH -> what goes in the 2nd aq layer -
Answer acetmainophenoxide [ A(ion) ]
Experiment 6
Select the answer that correctly explains the setup for the water flow in the condenser: -
Answer The water flows in at the bottom barb and out at the top, since the water is coldest
when coming from the tap and will heat up as it runs through the condenser.
Experiment 6
Given the following two reagents, which is likely the product if they undergo a Diels-Alder
reaction - Answer LOOK AT PIC
In a microscale version of Exp. 6, 0.281 g anthracene (C14H10) and 0.194 g of maleic anhydride
(C4H2O3) are reacted as shown:
Determine the theoretical yield of the limiting reagent in grams.
Make sure your answer has the correct units and the correct number of significant figures. -
Answer 0.281 g C14H10 x 1 mol C14H10 x 1 mol C4H2O3 x 276.3 g
178.23 g C14H10 1 mol C14H10 1 mol C4H2O3
= 0.436 g
Actual Answers 2025-2026 Updated.
In a certain scenario, you have a separatory funnel containing two unknown colorless, clear, and
immiscible layers. How would you determine which is is the organic layer and which is the
aqueous layer?
Read the options carefully below. Select the answer that accomplishes this. - Answer
Remove a small amount of the bottom layer, and add a few drops of water to see if it is miscible.
Which of the following statements are correct regarding the use of a separatory funnel? -
Answer Venting a separatory funnel is important in part because the acid-base reactions can
generate gas products, which creates an explosion hazard.
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Wash the organic layer - Answer NaCl (brine)
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Remove water from the organic layer - Answer MgSO4
Match the purpose of each reagent to the reagent in the separation for Exp. 4.
Extract acetaminophen into the aqueous layer - Answer KOH
Which answer choice correctly explains partitioning (seen in Exps. 3, 4, and 5)? - Answer
When a molecule travels to the layer (or phase) that it is most attracted to due to similar
intermolecular forces.
Which reagent(s) can be used to deprotonate acetaminophen in Exp. 5? Select all that are
correct. - Answer KOH
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
Protonate aspirin or acetaminophen - Answer HCl
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
, Extract aspirin into the aqueous layer - Answer K2HPO4
Match the purpose of each reagent to the reagent in the separation for Exp. 5.
Organic layer solvent - Answer ethyl acetate
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> K2HPO4 -> what goes in the 1st organic
layer - Answer caffeine (C)
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> K2HPO4 -> what goes in the 1st aq layer -
Answer acetylsalicylate [ AA(ion) ]
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> KOH -> what goes in the 2nd organic layer -
Answer caffeine
EXP 5 acetysalicylic acid, acetaminophen, caffeine -> KOH -> what goes in the 2nd aq layer -
Answer acetmainophenoxide [ A(ion) ]
Experiment 6
Select the answer that correctly explains the setup for the water flow in the condenser: -
Answer The water flows in at the bottom barb and out at the top, since the water is coldest
when coming from the tap and will heat up as it runs through the condenser.
Experiment 6
Given the following two reagents, which is likely the product if they undergo a Diels-Alder
reaction - Answer LOOK AT PIC
In a microscale version of Exp. 6, 0.281 g anthracene (C14H10) and 0.194 g of maleic anhydride
(C4H2O3) are reacted as shown:
Determine the theoretical yield of the limiting reagent in grams.
Make sure your answer has the correct units and the correct number of significant figures. -
Answer 0.281 g C14H10 x 1 mol C14H10 x 1 mol C4H2O3 x 276.3 g
178.23 g C14H10 1 mol C14H10 1 mol C4H2O3
= 0.436 g
