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What is the 2,4-DNP test and how it help to determine if the reaction was successful?
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- What is the 2,4-DNP test and how it help to determine if the reaction was successful? please type the answerDirections: Check which tests does the unknown compounds got positive results. Test Positive result A B C D E Chromic blue-green to opaque- green solution acid Test Tollen's test Silver mirror coat Lucas Test Turbid fast Iodoform Pale Yellow ppt TestWhat reagents could interfere with the 2,4-DNPH test?
- The following compounds tested positive in their respective chemical tests. Give their chemical reaction. a. 3-pentanol (Lucas Test)b. Benzophenone (2,4-DNP Test)How will the following compounds react to Brady's test (reaction with 2,4-DNPH), Baeyer's test, Fehling's reagent, and iodoform test? 1. butan-2ol 2. 2-methylbutan-2ol 3. butan-2-one 4. propanalYou are setting up an experiment to stain cells with DAPI (4',6-diamidino-2- phenylindole). Your stock solution of DAPI is 1 mg/mL. You need your final staining solution to be 1 ug/mL. a) What is the dilution factor you need to use to go from your stock solution (1 mg/mL) to your final staining solution (1 ug/mL)? you can. Show your workings if . b) To what regions of DNA does DAPI bind? Describe in terms of the bases and part of the DNA double helix. c) You notice multiple especially dark speckles in the nuclei of your cells when you look under a microscope. What kind of DNA/chromatin do you think this is? Think in terms of more or less actively transcribed DNA regions.
- You perform the reaction, and monitor its progression by TLC every 30 minutes for 3 hours. The lab manual shows the developed TLC for the reaction, with the two starting materials 2,6-dimethylaniline (DMA) and p-nitrobenzylchloride (NBC) spotted in the left most lanes as co-spots. How long does it take for this reaction to reach completion? (A) The reaction has reached completion and should be stopped after 90 minutes B The reaction has reached completion and should be stopped after 120 minutes C) The reaction has reached completion and should be stopped after 150 minutes D) The reaction has reached completion and should be stopped after 180 minutes E The reaction does not reach completion in 180 minutes and should be left to continue with TLC monitoringWhat is the reaction involved in this experiment?What are the confirmatory test for the presence of β-naphthol methyl ether?
- What may have caused the separation of the dye components?6 4.00 8 7 6 2.95 7.820 7.791 -7.756 7.727 5 4 3 2 1 ppm -3.911 — 1H of Methyl-4-iodobenzoate in CDC131. A compound of molecular formula C5H100 forms a yellow precipitate with reagent and a yellow precipitate with reagents for the iodoform test. 2,4-dinitrophenylhydrazine a) Draw the structural formulae on a piece of paper, take a picture of them and upload the image below. b) Name the two (2) compounds that fit these tests.