Absorption, or a scrubber, removes components from a rising gas by contacting it with a falling liquid. This process is known as what?

Absorption, or a scrubber, removes components from a rising gas by contacting it with a falling liquid. This process is known as what?

• A. Desorption
• B. Adsorption
• C. Distillation
• D. Absorption

Answer: (D)

Absorption is the transfer of a component from a gas into a liquid during contact. In a scrubber, the gas rises while a liquid solvent falls, providing fresh solvent that captures the soluble components into the liquid phase. This cleans the gas and concentrates the absorbed species in the liquid. Desorption is the reverse process—releasing a substance from a liquid (or solid) back into a gas. Adsorption involves molecules sticking to a solid surface rather than dissolving into a liquid, and distillation relies on differences in volatility to separate components through vaporization and condensation. The essential idea here is that the solute moves from the gas into the liquid due to solubility and partial pressure differences, which is exactly what absorption describes.

Absorption is the transfer of a component from a gas into a liquid during contact. In a scrubber, the gas rises while a liquid solvent falls, providing fresh solvent that captures the soluble components into the liquid phase. This cleans the gas and concentrates the absorbed species in the liquid.

Desorption is the reverse process—releasing a substance from a liquid (or solid) back into a gas. Adsorption involves molecules sticking to a solid surface rather than dissolving into a liquid, and distillation relies on differences in volatility to separate components through vaporization and condensation. The essential idea here is that the solute moves from the gas into the liquid due to solubility and partial pressure differences, which is exactly what absorption describes.