Steady state equimolal counter diffusion is encountered in_____________________?
Correct answer: C. Separation of a binary mixture by distillation
- A. All liquid-liquid diffusion systems
- B. Absorption of NH3 from air by water
- C. Separation of a binary mixture by distillation
- D. All liquid-solid diffusion systems
Explanation
Binary distillation commonly involves equimolal counterdiffusion because the molar liquid and vapour flow rates remain approximately constant through the column. Ammonia absorption into water is not equimolal because the solvent is essentially nonvolatile.
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