In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence for your answer?
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In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence for your answer?
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- Will the given lipid test positive in the Ninhydrin test?In what way can alkaloidal reagents precipitate proteins? In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence for your answer?If a more concentrated initial solution bicarbonate was used in beaker C, would it require more or less bicarbonate to neutralize the acid? Why?
- the phensuprin solid is first dissolved in ethyl acetate. one solid will be left over-what is it?What is the purpose of: A. The concentrated salt solution? B. adding isopropyl alcohol to the solution? Why does it need to be in low temperature?If a less concentrated initial solution of socium bicarbonate was used in beaker C, would that solution require more or less bicarbonate to neutralize the acid? Why?
- An unknown carbohydrate gave a brick-red precipitate when tested with Fehling’s reagents, turned red when reacted with Seliwanoff’s reagent, and quickly gave a red precipitate with Barfoed’s reagent. What conclusion can be made about this carbohydrate?Discuss the results and observations in a regular laboratory experiments the denaturation of: 1. Hydrochloric acid and proteins 2. Lead (II) acetate solution 3. Ethanol 4. Picric acidWhat are the differences between Benedict's solution and Fehling's solution? ls there a difference on how their components react with the carbohydrates that show positive results for the said tests?
- Which lipid sample (butter/oil is soluble or miscible in water? Explain.Write out the acid dissociation reaction for hydrochloric acid. Calculate the pH of a solution prepared by diluting 3 ml of 0.5 M HCl to a final volume of 100 ml with H2OIf a 250 ml solution of ethanol in water is prepared with 4 ml of absolute ethanol (100%), what is the dilution factor?