During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the___________________?
Correct answer: A. Liquid film
- A. Liquid film
- B. Gas film
- C. Liquid-gas interface
- D. None of these
Explanation
Carbon dioxide has limited solubility in water compared with highly soluble gases, so the liquid-side concentration gradient provides the principal resistance during absorption. The gas film is comparatively less controlling in this service.
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