Anesthesia Technician Practice Exam

What is the alternative name for barium hydroxide lime in CO2 absorption?

1. Slaked lime

2. Soda lime

3. Brominated lime

4. Calcium lime

The correct answer is: Slaked lime

Barium hydroxide lime is commonly referred to as "slaked lime." This is because slaked lime is a term used for calcium hydroxide, which is produced by adding water to calcium oxide (quicklime). The process of slaking involves the reaction of water with quicklime, resulting in a stable compound that can be used in various applications, including carbon dioxide absorption in anesthesia machines. While barium hydroxide lime can be mixed with components that can absorb CO2, such as calcium hydroxide and certain chemical additives, the term "slaked lime" reflects the hydroxide form derived from the hydration of lime (calcium oxide), which is integral in various chemical processes, including CO2 absorption. The other options—soda lime, brominated lime, and calcium lime—refer to different chemicals or combinations specifically used in medical applications for CO2 absorption. Soda lime, for example, is a mixture of sodium hydroxide and calcium hydroxide, which serves a similar purpose but is distinct from barium hydroxide lime. Consequently, in the context of CO2 absorption, recognizing barium hydroxide lime as slaked lime helps distinguish its specific chemical properties and applications.