【Daily Question】Principles of Chemical Engineering 155: Extraction Solvents (August 28)
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This post was last edited by “Back to Cambridge” on September 22, 2015, at 10:44. Starting today, the Chemical Engineering Theory section is launching the “Question of the Day” activity, aimed at helping everyone reinforce their fundamental knowledge in chemical engineering. Subsequently, series such as “Principles of Chemical Engineering”, “Mass Transfer and Separation”, “Chemical Thermodynamics”, and “Chemical Process Technology” will also be introduced. We hope for your active participation! For replies to the “Question of the Day” activity, answers can be viewed directly; however, the thread will be closed after one day ! Participation earns 2 wealth points, with an additional 3 wealth points for correct answers~~~ Short answer question: The main principles for selecting a solvent in extraction operations are __________________. ___________________. ____________________. It should have good selectivity for the component to be extracted, low solubility in the diluent, be easy to recover, inexpensive, and non-toxic.
The main principle for selecting a solvent in extraction operations is _the strong solubility of the solute___； High selectivity ； Easy to recycle_
The main principles for selecting a solvent in extraction operations are strong solubility for the solute, high selectivity, and easy recovery.
The solute has strong dissolving capacity, high selectivity, and is easy to recover
Answer: 1. It has good selectivity for the component to be extracted； 2. The smaller the mutual solubility with the diluent, the better ； 3. Easy to recycle, inexpensive, and non-toxic.
The separated substances have strong solubility and high selectivity; the resulting extract phase is easy to separate due to its high relative volatility, is inexpensive, and has low toxicity.
Strong dissolving capacity, high selectivity, easy to recover
Short answer: The main principles for selecting a solvent in extraction operations are good selectivity for the component to be extracted, as low solubility as possible in the diluent, and ease of recovery at a low cost with no toxicity.
The solute has strong dissolving capacity, high selectivity, and is easy to recover.
The solute has strong dissolving capacity, high selectivity, and is easy to recover
It is immiscible with the original solvent, does not react with the substance to be extracted, and the solubility of the substance to be extracted in the extractant is greater than that in the original solvent