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- List and describe two methods that can used to improve the separation of a liquid mixture by fractional distillationWhat are azeotropes, and how do they affect a distillation process? Azeotropic distillation is a process that can be used to separate azeotropes from other feed components. Discuss using a suitable example how this method can be applied to separate azeotropes during a distillation process.Briefly explain how slow cooling contributes to the formation of pure crystals during recrystallization.
- The liquid-liquid extraction is the classical technique in chemistry to isolate a target component from a mixture. Organic Solvent is the usual solvent being used along with water. TRUE or FALSECompare simple and fractional distillation for the separation of HEXANE and TOLUENE1. What characteristics must a substance possess for it to be separated from a heterogeneous mixture by steam distillation? 2. Explain the role of steam in facilitating the distillation of essential oils. 3. Compare and contrast simple and steam distillation in terms of the type of mixtures separated by each technique. 4. What is/are the difference(s) between a simple distillation and steam distillation?
- Why is flameless heating used for heating a solution in hexane or diethyl ether during a recrystallization? Why should the size of crystals obtained in a recrystallization be neither too large nor too small?Why do two layers form when solutions containing water are added to the extracted dichloromethane (CH2CI-2) solution?Briefly describe the principles for separating the components of a mixture by solvent extraction.
- 2. When performing the recrystallization of an impure solid, why is it advised to use the minimal amount of solvent possible? Group of answer choices To minimize the amount of pure solid lost due to its solubility. To minimize the cost of the recrystallization. To reduce the time needed to filter the pure solid from the solvent after recrystallization. To minimize the amount of hazardous materials used.1. Cite one factor that affects percent yield during recrystalization. 2. Discuss the importance of solvent-solvent partition in separating mixtures.In order to perform a recrystallization using a mixed-solvent system to dissolve your impure solid. Which of the following could not be used as solvent pairs for such a crystallization? Why could you not use that pair? Which pair would you use and why? A) Water and Diethyl ether B) Water and Ethanol C) Hexane and Diethyl Ether