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Describe the method, which can be used to separate two compounds with different solubilities in a solvent S.

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As a seasoned tutor registered on UrbanPro, I'm thrilled to address your query on separating compounds with different solubilities in a solvent. UrbanPro provides a fantastic platform for sharing educational insights, and I'm delighted to leverage it for your benefit. When it comes to separating two...
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As a seasoned tutor registered on UrbanPro, I'm thrilled to address your query on separating compounds with different solubilities in a solvent. UrbanPro provides a fantastic platform for sharing educational insights, and I'm delighted to leverage it for your benefit.

When it comes to separating two compounds with varying solubilities in a solvent (let's call it S), we often resort to a technique called solvent extraction or liquid-liquid extraction. This method relies on the principle that different compounds have different affinities for different solvents. Here's how it works:

  1. Selection of Solvent: The first step is crucial - choosing the right solvent. It should have the property of selectively dissolving one of the compounds while leaving the other relatively insoluble. This selection is often based on the relative polarities of the compounds.

  2. Extraction Process: The mixture containing both compounds is dissolved in the selected solvent (S). The solution is then agitated or stirred to ensure thorough mixing. This allows the compounds to distribute themselves between the aqueous and organic phases based on their solubilities.

  3. Separation of Phases: After agitation, the mixture is allowed to settle. Due to the differences in solubilities, the compounds will partition themselves between the solvent (S) and the original solvent or water. This results in the formation of two distinct layers or phases - the aqueous phase and the organic phase.

  4. Phase Separation: The next step involves carefully separating the two phases. This can be done using a separating funnel, where the denser aqueous phase settles at the bottom while the organic phase floats on top. The layers are then carefully drained into separate containers.

  5. Recovery: Finally, the compounds of interest can be recovered from each phase through various techniques such as evaporation or precipitation, depending on their properties.

  6. Purification (Optional): If further purification is required, additional techniques such as recrystallization or chromatography can be employed to obtain the desired purity.

In summary, solvent extraction is a powerful technique utilized in chemistry to separate compounds based on their differential solubilities. It's a cornerstone in various fields including organic chemistry, biochemistry, and environmental science. Mastering this method opens up a world of possibilities in analytical and synthetic chemistry. If you're interested in delving deeper into this topic or exploring other aspects of chemistry, feel free to reach out. As an experienced tutor on UrbanPro, I'm here to support your learning journey every step of the way.

 
 
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In a metallic bond, why positive ions are called kernels, not cations?
The kernel is an atom without its valence electrons that are weakly bonded; no electron belongs to one nucleus, valence electrons can move one kernel to another. So it is known as kernel, not cation (have valency).
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