Low temperatures will affect the CO2 absorbent.

• A. False
• B. Only during extreme heat
• C. True
• D. Only during heavy exertion

Answer: (C)

Temperature affects the chemical CO2 removal process in the absorbent bed. The soda lime reaction that removes CO2 relies on heat generated by the reaction and the presence of moisture to proceed efficiently. When temperatures are low, the reaction slows and the bed may not stay in its optimal moisture/heat balance, reducing how much CO2 it can capture in the available contact time. That means CO2 can build up in the loop more easily in cold conditions, making low temperatures a real factor in absorbent performance. So the statement is true.

The other options aren’t correct because the effect isn’t limited to extreme heat or to times of heavy exertion; it’s a temperature-dependent process that can degrade CO2 removal even at ambient cool temperatures, independent of exertion level.