Which of the following is an undesirable attribute for a gas absorption solvent ?
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Answer: D. None of these
Explanation
The correct answer indicates that none of the listed properties are undesirable because they are all required. An ideal gas absorption solvent must possess low vapour pressure to prevent significant vaporization into the gas stream. Additionally, the solvent requires low viscosity and a low freezing point to ensure smooth and efficient column operations. Gas absorption is a standard chemical engineering unit operation used to separate specific gases from gaseous mixtures. Mass transfer efficiency depends heavily on the physical properties of the liquid solvent chosen for the absorption column. Selecting an appropriate solvent minimizes operating costs and prevents excessive solvent loss during continuous industrial processing cycles.
Option A is incorrect because low vapour pressure is actually a highly desirable trait to prevent solvent evaporation losses. Option B is incorrect because low viscosity is preferred to reduce pumping power requirements and enhance mass transfer coefficients. Option C is incorrect because a low freezing point prevents the solvent from solidifying during winter or refrigeration operations.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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