What qualitative test/s is/are needed to ascertain that there are no unreacted reactants present in the product collected during the esterification of salicylic acid and acetic acid during the experiment
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What qualitative test/s is/are needed to ascertain that there are no
unreacted reactants present in the product collected during the esterification of salicylic acid and acetic acid during the experiment?
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- Is the amount of acetic acid extracted using either single extraction or multiple extractions equal to the original amount of acetic acid present in original solution? If not, what happened to the difference in the amount extracted and the original amount of acetic acid?Describe the difference between an oil-in-water and a water-in-oil emulsion, and explain the use of the hydrophilic-lipophilic balance system to select an emulsifier.What are emulsions? Why do they form during extractions? How is the formation of an emulsion minimized?
- Potassium dichromate was used in the chromic acid preparation. Would there be a difference if chromium trioxide was used? Explain your answer.In glucose estimation using Benedict's Reagent, briefly explain what would happen if the water evaporates completely and is not immediately replaced and what effect this will have on the calculated titer of Benedict's reagent.What is the purpose of performing a blank titration in the assay of ibuprofen? A. To determine the amount of titrant that would react with the indictor. B. To determine the amount of titrant that would react with ibuprofen. C. To determine the amount of titrant that would react with potassium hydrogen phthalate. D. To determine the amount of titrant that would react with free acid in the solvent.
- Develop a methodology to calculate the yield of the reaction (grams of acetylsalicylic acidproduced) based on the mass of salicylic acid used in the experimentBased on the resulting chromatograms after visualization with iodine vapor, which between the solvent systems WHITE and MIX resulted in a more effective separation of the pigments of the indigo extract? Explain your answer in terms of the solvent that did not effectively separate the components of the root extract.When is a PTFE buret used? _________________________________________________________ _ _________________________________________________________________________________ Describe the recommended method for the manipulation of a buret stopcock during titration. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Why is it necessary to completely fill the rubber tubing of the stopcock with the solution before titration? ________________________________________________ ____________________________________________________________________________________________________________________________________________________
- 4. If you measured the melting point of aspirin from this experiment andobtained a melting range of 122-128 °C, what does this tell you? If acetic acid is the other byproduct with aspirin at the end of the reaction of salicylic acid and acetic anhydride.A solution containing orange rind extract was analyzed using gas chromatography to measure its limonene content. The parameters used to analyze the standards and samples are listed below. Calculate the concentration of limonene in the solution in ug/mLIn addition to a low boiling point and immiscibility with water, why is density important to consider in the selection of an extraction solvent? Would an organic liquid with a density of 1.006 g/mL make a good extraction solvent? Explain.Write the chemical reaction that took place during this experiment.