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Which is the more effective extraction technique, single or multiple extractions? Explain.
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- (extraction, reactive extraction, recrystallization). Write a few sentences for each technique explaining themmethyl alcohol and ethyl alcohol are poor extraction solvent. why?When extracting an aqueous solution with an organic solvent and after agitation and settling, the two layers are of very similar appearance. You know that the organic layer contains your product and the aqueous layer is the waste layer, but you are not 100% certain which layer is which. What simple test might you perform to determine which is the organic layer?
- Liquid-liquid extraction is BEST suited to separate a mixture of compounds when? a) The mixture contains compounds with similar polarities but different solubilities. b) The mixture contains compounds with similar solubilities but different molecular weights. c) The mixture contains compounds with similar melting points but different polarities. d) mixture contains compounds with similar molecular weight but different polarities. e) mixture contains compounds with similar molecular weight but different melting points.After separating layers in an extraction, it is necessary to “dry” the organic layer with a substance that absorbs water. Explain why this is necessary.If 80% of a desired compound is extracted into the organic phase in each step (leaving 20% in the aqueous layer), how many extractions are necessary to ensure that at least 99% of the compound has been recovered in the organic phase? 1 extraction 2 extractions 3 extractions 4 extractions
- Why is the glucose assay one of the most common analytical test performed in clinical chemistry.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?How iso-butane is used to ionize the given sample.
- . Given the following drugs in a urine specimen: Cocaine alkaloid Secobarbital (a derivative of barbituric acid) Carisoprodol (a neutral drug) Devise an analytical flow chart that will be used to separate these substances from a urine specimen. The separation will be liquid extraction methods. Choose appropriate solvents and reagents based on the properties of the materials to be separated.How can you identify the organic and aqueous layers in an extraction if you donot know which is which?Answer the attached photo. Give the relevant solution.