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Why is the Refractive Index of hexane closer to the refractive index of heptane in both simple and fractional distillation?
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- Why the Refractive Index of hexane and heptane from simple distillation closer to the refractive index of hexane and heptane from fractional distillation?Compare simple and fractional distillation for the separation of HEXANE and TOLUENEList and describe two methods that can used to improve the separation of a liquid mixture by fractional distillation
- Silica gel (stationary phase) can potentially interact with analytes by what intermolecular forces?Below are the gas chromatography results of two separate distillations of the same 1:1 mixture of ethanol and 1-butanol. One sample was obtained from the first fraction of a simple distillation and one sample was obtained from the first fraction of a fractional distillation. Identify the peaks in the chromatographs. Discuss the conclusions you can make regarding simple distillation compared with fractional distillation. Which method was more successful?You are carrying out an experiment by analysing alcoholic drinks by gas chromatography. Why is Gas chromatography the best technique used for this analysis? Why is Carbowax a suitable stationary phase for this analysis? What gases are used and what is their purpose and source?
- Acetophenone is soluble in diethyl ether, isopropanol, and nhexane. Identify and justify the most suitable solvent for UV- Vis characterization?The required mobile phase for the analysis caffeine in soft drinks in liquid chromatography are methanol and water. What class of methanol and water must be used? Kindly explain the answer.Differentiate normal phase chromatography from reverse phase chromatography. From which of the two governs the video demonstration in TLC and paper chromatography? How do you say so?
- It is usually recommended to clean the glass surfaces of a refractometer with ethanol or isopropyl alcohol rather than acetone or water. Why?What is the underlying principle used in chiral chromatography to separate components of an analyte?Paper Chromatography and TLC are examples of planar chromatography. True or FalsE?