An Analyst Receives a Sample That Contains MDMA, a Basic

question 23

Multiple Choice

An analyst receives a sample that contains MDMA, a basic drug with a pKa of 9.9. The analyst dissolves the powder in a buffer solution with a pH of 12. After filtering, they pour the aqueous buffer solution into a separatory funnel. They add chloroform, close and shake. Two layers form. Where will the MDMA be?

• A) In the aqueous layer
• B) In the chloroform layer
• C) equally divided between the two layers
• D) it will precipitate out as a solid
• E) none of the above

---

Definitions:

Cardiovascular Disease

A class of diseases that involve the heart or blood vessels, often related to the buildup of fatty deposits inside the arteries.

Saturated Fats

Fatty acids found in animal and some plant fats that are solid at room temperature and can contribute to heart disease.

Trans Fatty Acids

A type of unhealthy fat found in partially hydrogenated oils, associated with an increased risk of heart disease and other health issues.

Stroke

A medical condition characterized by the sudden death of brain cells due to lack of oxygen, caused by blockage or rupture of an artery to the brain.