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Silica gel (stationary phase) can potentially interact with analytes by what intermolecular forces?
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- This is surface/colloid scienceGive some related literatures about colligative properties and freezing point depression phenomenonExplain the importance of using a thermometer in the simple distillation setup. Enumerate the characteristics of a substance for it to be separated from the heterogeneous mixture by steam distillation. How does steam facilitate the distillation of essential oils? Discuss some applications of simple distillation and steam distillation. Explain why you can use each method for the chosen application. What is the most dominant intermolecular forces of attraction that exist between: a. water and limonene, the major monoterpene component of lemon essential oil? b. water and constituent ions of sodium chloride? 6. Based on your answers in number 5, which pair (water-limonene or water-sodium chloride) exhibits a stronger attraction between their molecules/ions? 7. Describe what happens during the salting-out process in terms of the intermolecular forces of attraction involved as mentioned in your previous answers.
- Write Short paragraph about heterogeneous coloidal solution.It has been observed experimentally that the AHpolution for methanol as solvent and dimethylsulfoxide (DMSO) as solute is negative. The structures of these compounds are given below. H. H A H3C "CH3 DMSO (dimethylsulfoxide) Methanol Please answer these questions in order to explain this fact: What IMFS are there between methanol molecules and other methanol molecules? Draw a diagram. What IMFS are there between DMSO molecules and other DMSO molecules? What IMFS are there between methanol molecules and DMSO molecules? Draw a diagram. If AHsolution for dissolving DMSO in methanol is negative, what does this say about the energy released in mixing methanol and DMSO molecules (AHmixing) as compared to the energy required in separating solute molecules from each other (AHsolute) and separating solvent molecules from each other (AHsolvent)? 26A sample of 2.05 g of polystyrene of uniform polymer chain length was dissolved in enough toluene to form 0.100 L of solution. The osmotic pressure of this solution was found to be 1.21 kPa at 25°C. Calculate the molar mass of the polystyrene. 8 - a) 2.35 x 10 g/mol b) 4.20x 10 g/mol 3.05 x 10 g/mo 4.20x 103 g/mol 4.20 x 10 g/mol Boş bırak KÖnceki 8/20 Sonraki> Карat
- (A) Molar mass of Atrazine: 215.685 g/mol Calculate the amount of Atrazine needed to prepare 100 mL of a 1M concentrated stock solution . Measurements should be calculated in grams(g) or miligrams (mg). (B) Molar mass of Glyphosate: 169.07g/mol Calculate the amount of Glyphosate needed to prepare 100 mL of a 1M concentrated stock solution . Measurements should be calculated in grams(g) or miligrams (mg).We utilise the phrase "like dissolves like" when choosing the correct solvent for the recrystallization technique. Which of the following sentences accurately describes this principle? A. two compounds with the same type and strength of intermolecular forces will likely dissolve in each other B. two substances with the same type of intermolecular forces but of different magnitude are likely to dissolve in each other C. two substances that contain in their structure the same skeleton, but different functional groups are likely to dissolve in each other. D. options B and C E. options A and BDescribe what happens during salting-out process in terms of the forces of attraction involved as sodium chloride is added into the water-essential oil mixture.
- In the Isolation of Caffeine from Tea experiment, the tea bags were first boiled in water followed by performing an extraction using the organic solvent, methylene chloride. Which physical property was essential in selectively extracting caffeine from the aqueous layer into the methylene chloride layer? Solubility Boiling point Freezing point DensityCriteria and constraints help determine which solutions will be applied when extracting materials from pomace. In which way might a specific criterion be applied to this situation? * The use of pomace for animal feed might be chosen if a food company does not hav access to a production plant for extracting chemicals. The use of pomace for pharmaceuticals might be chosen if minimizing production costs is desired. The use of pomace for animal feed might be chosen if minimizing production costs is desired. The use of pomace for pharmaceuticals might be chosen if a food company does not have access to a production plant for extracting chemicals. IAIL L search 6:54 AM 75°F Mostly clear 3/17/2022synthetic ion exchange resins. These resins are organic polymeric networks that contain functional groups that are permanently attached to the resin. One such functional group is sulfonic acid, -SO3H. When placed in water, the resin (being a large organic molecule) will not dissolve. However, the ionic functional groups become hydrated and the resin will swell as it takes up waters of hydration. The resin may then be thought of as a solid solution mixture with the functional groups being "dissolved" but the polymer remaining as a solid. The hydronium ion (H3O+) associated with acidic functional groups like sulfonic acid will dissociate just as it would if the acid were free of the resin. If other cations such as Cu2+ or Na+ are added to the resin, an ion-exchange reaction can occur: . Note that one H+ is released for each positive charge bound to the resin. Since the resin exchanges a hydrogen ion for a sodium ion in this reaction, sulfonic acid resins are called cation-exchange…