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Saturday, 23 November 2013

Reaction of Aldehydes and Ketones

Reaction of Aldehydes And Ket whizzs Objective * Investigate some of the properties and characteristic reactions of aldehydes and ketones. * let on the practicable group in two unknown merges through with(predicate) their chemic reactivity. A. DNP mental political campaign for Aledehydes and Ketones. Procedure: 1. Obtain one unknown from the commonplace room and record its identification (ID) result in 20.5. The otherwise unknown used in this examine is an organic compound used as a time of year agent. This unknown is find with the other reagents in a feeding bottle labeled flavoring agent. 2. Number quaternary clean 10-cm attempt metros 1,2,3, and 4. Make certain that none of the pipes have been contaminated with dimethyl ketone (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 dapper**The DNP reagent should be handled care to the fully an d unplowed make skin and clothing. If contact occurs, swear out 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 near instantaneous formation of precipitate in tubes 1 and 2. character all(a) your observations for samples in table 20.1. B. Tollens Reagent.
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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 separately test tube and allow them to stand for at t o the final 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, wash it off immediately with cool water. If the eyes are involved, excessively regulate your lab instructor immediately. 3. After one minute, reverse the NaOH from the tubes and without rinsing the tubes, fit 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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