Chemical Engineering Exam > Chemical Engineering Questions > Pick out the correct statement.a)In case of l...
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Pick out the correct statement.
- a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.
- b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.
- c)The selectivity of solvent used in solvent extraction is unity at the plait point.
- d)all (a), (b) and (c).
Correct answer is option 'D'. Can you explain this answer?
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Pick out the correct statement.a)In case of liquid-liquid extraction, ...
Liquid-Liquid Extraction
Liquid-liquid extraction is a separation technique that involves the transfer of a solute from one liquid phase to another liquid phase based on the difference in solubility. It is widely used in various industries for the extraction and purification of desired compounds from a mixture.
Separation in Liquid-Liquid Extraction
The selectivity of the solvent used plays a crucial role in the separation process. Selectivity refers to the preference of a solvent to extract one component over another. The higher the selectivity, the greater the separation efficiency. Therefore, it is important to choose a solvent with high selectivity for the desired compound.
Statement (a)
The statement (a) suggests that in the case of liquid-liquid extraction, no separation is possible if the selectivity of the solvent used is unity. However, this statement is incorrect. Even if the selectivity is unity, separation is still possible based on other factors such as distribution coefficient and operating conditions.
Statement (b)
The statement (b) states that with an increase in temperature, the selectivity of the solvent used in solvent extraction decreases. This statement is true. In many cases, the selectivity of a solvent decreases with increasing temperature. This can be attributed to changes in the solubility and intermolecular interactions between the solute and solvent molecules.
Statement (c)
The statement (c) suggests that the selectivity of the solvent used in solvent extraction is unity at the plait point. However, this statement is incorrect. The selectivity of a solvent is not necessarily unity at the plait point. The plait point is the temperature at which the solute is equally distributed between the two liquid phases.
Correct Statement
The correct statement is (d) which states that all of the statements (a), (b), and (c) are correct. This means that none of the given statements are individually correct, but a combination of them is true.
Conclusion
In liquid-liquid extraction, the selectivity of the solvent used is an important factor for efficient separation. The selectivity can be influenced by various factors such as temperature, solubility, and intermolecular interactions. While statement (a) is incorrect, statement (b) is true in general, and statement (c) is incorrect. Therefore, the correct answer is option (d) - all (a), (b), and (c).
Liquid-liquid extraction is a separation technique that involves the transfer of a solute from one liquid phase to another liquid phase based on the difference in solubility. It is widely used in various industries for the extraction and purification of desired compounds from a mixture.
Separation in Liquid-Liquid Extraction
The selectivity of the solvent used plays a crucial role in the separation process. Selectivity refers to the preference of a solvent to extract one component over another. The higher the selectivity, the greater the separation efficiency. Therefore, it is important to choose a solvent with high selectivity for the desired compound.
Statement (a)
The statement (a) suggests that in the case of liquid-liquid extraction, no separation is possible if the selectivity of the solvent used is unity. However, this statement is incorrect. Even if the selectivity is unity, separation is still possible based on other factors such as distribution coefficient and operating conditions.
Statement (b)
The statement (b) states that with an increase in temperature, the selectivity of the solvent used in solvent extraction decreases. This statement is true. In many cases, the selectivity of a solvent decreases with increasing temperature. This can be attributed to changes in the solubility and intermolecular interactions between the solute and solvent molecules.
Statement (c)
The statement (c) suggests that the selectivity of the solvent used in solvent extraction is unity at the plait point. However, this statement is incorrect. The selectivity of a solvent is not necessarily unity at the plait point. The plait point is the temperature at which the solute is equally distributed between the two liquid phases.
Correct Statement
The correct statement is (d) which states that all of the statements (a), (b), and (c) are correct. This means that none of the given statements are individually correct, but a combination of them is true.
Conclusion
In liquid-liquid extraction, the selectivity of the solvent used is an important factor for efficient separation. The selectivity can be influenced by various factors such as temperature, solubility, and intermolecular interactions. While statement (a) is incorrect, statement (b) is true in general, and statement (c) is incorrect. Therefore, the correct answer is option (d) - all (a), (b), and (c).
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Pick out the correct statement.a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.c)The selectivity of solvent used in solvent extraction is unity at the plait point.d)all (a), (b) and (c).Correct answer is option 'D'. Can you explain this answer?
Question Description
Pick out the correct statement.a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.c)The selectivity of solvent used in solvent extraction is unity at the plait point.d)all (a), (b) and (c).Correct answer is option 'D'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about Pick out the correct statement.a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.c)The selectivity of solvent used in solvent extraction is unity at the plait point.d)all (a), (b) and (c).Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pick out the correct statement.a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.c)The selectivity of solvent used in solvent extraction is unity at the plait point.d)all (a), (b) and (c).Correct answer is option 'D'. Can you explain this answer?.
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Solutions for Pick out the correct statement.a)In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.b)With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.c)The selectivity of solvent used in solvent extraction is unity at the plait point.d)all (a), (b) and (c).Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering.
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