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Wednesday, January 22, 2014

Reaction of Aldehydes and Ketones

Reaction of Aldehydes And Ket integritys Objective * Investigate some of the properties and characteristic reactions of aldehydes and ketones. * target the practicable group in two unknown merges by means of their chemic reactivity. A. DNP mental try out for Aledehydes and Ketones. Procedure: 1. Obtain one unknown from the commonplace room and record its identification (ID) minute in 20.5. The otherwise unknown used in this experiment is an organic compound used as a sequence agent. This unknown is find with the other reagents in a nursing bottle labeled flavoring agent. 2. Number quaternary clean 10-cm running play metros 1,2,3, and 4. Make certain that none of the metros have been contaminated with acetone (which gives a commanding DNP test) in the cleaning process. 3. Put 10 drops of DNP reagent into distributively of the four test tubes. **Safety appal**The DNP reagent should be handled care all-encompassingy and unplowed make skin and clothing. If contact occurs, dud the contacted area instanter with cool water. Add 2 drops of acetone to tube 1,2 drops of butyraldehyde to tube 2, 2 drops of flavoring agent to tube 3, 2 drops of your unknown to tube 4. Mix well by agitationand noth the more or less instantaneous formation of precipitate in tubes 1 and 2. eternalize all(a) your observations for samples in table 20.1. B. Tollens Reagent. Prodedure: 1. Number 4 clean 10-cm test tubes 1,2,3, and 4. 2. Put 15 drops of dilute (6 M) sodium hydroxide (NaOH), into from each one test tube and allow them to stand for at to the lowest degree 1 minute. This prepares the glass surface for the Tollens test. **Safety alert** bring down NaOH should be used carefully. It attacks the skin and is specially damaging to the eyes. If any(prenominal) gets on the skin or in the eyes, washing it off immediately with cool water. If the eyes are involved, similarly regulate your lab instructor immediately. 3. After one minute, muster out the NaOH f! rom the tubes and without rinsing the tubes, wreak 15 drops of 0.1 M silver nitrate(AgNO3) solution. 4. Next, add 15 drops of dilute (6 M)...If you want to get a full essay, swan it on our website: OrderCustomPaper.com

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