When you are extracting an aqueous solution with an organic solvent, you are uncertain of which layer in the separatory funnel is aqueous, how would you quickly sort out the issue.
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When you are extracting an aqueous solution with an organic solvent, you are uncertain of which layer in the separatory funnel is aqueous, how would you quickly sort out the issue.
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- If you are unsure as to which layer in the separatory funnel is aqueous when extracting an aqueous solution with an organic solvent, how could you settle the issue?You are employed as a coop student at the Drug and Alcohol Testing Association of Canada (DATAC) developing analytical tests for sports doping agents. You are asked to prepare a procedure for the extraction of methylphenidate, the active compound in Ritalin, from urine samples (consider them as simple aqueous layers, you do not need to consider other components!). The goal of the procedure is to extract the methylphenidate into an organic layer which will then be evaporated, and the residue will be tested for the drug.You find that methylphenidate is highly soluble in 2-methyltetrahydrofuran, a bio-renewable solvent. Draw the structure of 2-methyltetrahydrofuran and give two reasons why it is a good solvent choice for liquid-liquid extraction.You are employed as a coop student at the Drug and Alcohol Testing Association of Canada (DATAC) developing analytical tests for sports doping agents. You are asked to prepare a procedure for the extraction of methylphenidate, the active compound in Ritalin, from urine samples (consider them as simple aqueous layers, you do not need to consider other components!). The goal of the procedure is to extract the methylphenidate into an organic layer which will then be evaporated, and the residue will be tested for the drug.Your colleague is helping you develop the urine test. They suggest that the urine should be adjusted to a pH above 7 before extracting with the organic solvent. Why is this necessary? Support your explanation with a full arrow-pushing mechanism for the reaction that would occur if the pH was below 7. Include all formal charges, intermediates (if applicable) and products.
- Describe in words and by means of complete chemical equations, how a mixture of 1.25 g of benzoic acid tertbutylbenzene can be separated by applying the separation of 2 components by liquid-liquid extraction.Which solvent would be the best choice for use as an extraction solvent in a separatory funnel with an aqueous solution of NaHCO3 followed by rotoevaporation? Hint: Consider the ability of the solvent to dissolve a wide range of substances, its miscibility with water, and its ability to evaporate the solvent easily by rotoevaporation. ethanol hexane toluene ethylene glycol methylene chlorideIf a mixture is distilled rapidly, the separation of its compound is poorer than if the mixture is distilled slowly. Please explain why is that so using your own understanding. I don't need a copy-pasted answer from google.
- For this statement, answer True or False and explain your answer briefly. Polarity is the only characteristic used in liquid-liquid extraction to isolate a poison from the biological matrix.Which solvent would be the best choice for use as an extraction solvent in a separatory funnel with an aqueous solution of NaHCO3 followed by rotoevaporation? Hint: Consider the ability of the solvent to dissolve a wide range of substances, its miscibility with water, and its ability to evaporate the solvent easily by rotoevaporation. ethylene glycolI received the following question from the professor. The answer is H2SO4, NaCN for the agent and H2O for the solvent. But some people say the answer is KCN and HCN. 1. Please write down the process of solving the problem in detail. Please tell me how you found the reagents and solvents and how they are applied. 2.In addition, I would like to solve a similar problem. What should I type on the internet to find this type of problem?
- Explain the reasons for the importance of crystallization step involved in the manufacturing of bulk drugs?You were given a mixture of two miscible solvent A and B that you are tasked to separate. You know that solvent A has a boiling point of 49 oC while solvent B has a boiling point of 174 oC. Which of the listed method would overall be the most efficient? Fractional distillation Recrystallization Solid-liquid extraction Liquid-liquid extraction Simple distillation Acid-Base extractionNH3 obtained when 0.5 g of an organic compound substance was subjected to Kjeldahl's method was neutralized by 10 mL of 1 N HCl. Estimate the composition (percentage) of nitrogen in the given organic compound. How can we eliminate CO₂ and H₂O in Dumas method ?
