Acetyl chloride test must be performed in dry test tube otherwise the unknown will give a false positive result. Discuss and provide a chemical reaction that would support this statement.
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Acetyl chloride test must be performed in dry test tube otherwise the unknown will give a false positive result. Discuss and provide a
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- Give and explain two precautions in brine solution experiment.What is the Victor-Meyer test? Describe how it is performed including reagents and describe the results. Use equations if possible.What is the effect of weighing a recrystallized organic solid which is not completely dried to the percentage yield? Elaborate.
- Which of the following should be done if there is no recrystallization due to the unsaturation of the solution? (mixed solvent recrystallization) a. Crystal seeding b. Scratching the inner walls or bottom of container c. Further boiling of solvent d. Adding small amount of sampleWhich oil - olive oil or coconut oil - would you expect to have a higher peroxide value after opening and storage under normal conditions as you prepare your certificate of analysis? Explain your answer.Concentrated sulfuric acid ortho-phosphoric acid used unsafely may cause severe
- Before disposing of water-reactive compounds, it is standard practice to quench their reactivity prior to their entrance into the waste stream. Which of the following compound(s) that were used would this apply to? OPTIONS -Sodium iodide -sodium borohydride -camphor -salicylic acid -salicylamideIn most distillations, the total volume of liquid obtained (distillate + residue) is not equal to the volume of the mixture introduced into the flask. What are the possible sources of loss in this procedure?assuming that charcoal and sugar are the main impurities in a sample of crude acetanilide explain how recrystallization from water would remove each.
- In the crude product, explain why you might obtain a yield which appears to be greater than 100%.Outline the dissociation reactions for carbonic acid and list the electrical charges of protonated and deprotonated forms. Attach a plot for the portions of molecules possessing each of the outlined charges as function of pH.TLC, a powerful analytical tool, can be used to monitor the progress of reactions. The synthesis of ethyl-3-coumarincarboxylate can be monitored by TLC by displaying the starting aldehyde 1, and coumarin product 2, which have very distinct Rf values (Hint: Think about the polarity of compounds 1 and 2 in terms of their abilities to H-bonds to silica gel). What can be determine about the progress of the reaction from analysis of the TLC shown below?