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Compare simple and fractional distillation for the separation of HEXANE and TOLUENE
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- Compare the simple distillation of pure hexane and binary mixture of hexane and toluene to that of a fractional distillation?List and describe two methods that can used to improve the separation of a liquid mixture by fractional distillationWhy the Refractive Index of hexane and heptane from simple distillation closer to the refractive index of hexane and heptane from fractional distillation?
- 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 extractionIn caffeine recrystallization, explain how recrystallization was performed and how pure caffeine was obtained.for the following, should i use fractional or simple distillation?separation of ethylene glycol (Tb = 195 oC) from acetone (Tb = 56 oC)
- 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?During the distillation of the Bromobenzene and water mixture which fraction is richer in Bromobenzene: a) First fraction b) Second fraction c) The last fraction d) All fractions have the same compositionHow can the temperature and the vapour pressure in a fractional distillation be effectively controlled
- 8. Organic solids are best purified by a. recrystallization b. vacuum distillation c. fractional distillation d. simple distillationWhy is fractional distillation more efficient than simple distillation when purifying liquid mixtures?Why is the Refractive Index of hexane closer to the refractive index of heptane in both simple and fractional distillation?