final weightpercent yield 2, 4-DNPTollens testpathway
. 42g67%positivenegativeoxidation of secondary OH
Good Things
My own experiment went well. I actually began my own experiment with. 64g of
2-ethyl-1, 3-hexanediol. The molecular weight of the compound can be 146. 2g/mol. It is changed into 2-ethyl-1-hydroxyhexan-3-one. This compounds molecular weight can be 144. 2g/mol. This gives a theoretical produce of. 63 grams. My personal actual deliver was. 42 grams. Consequently , my percent yield was 67%. It was one of my personal highest yields yet. We felt that the was a great yield since part of this experiment can be an sense of balance reaction. Hypochlorite must be used in excess to push the response to the proper. Also, there have been better strategies to do this test where higher yields might have been produced. One example is PCC could have been used. Nevertheless , because of its dangerous properties, the use is restricted. The purpose of this experiment was going to determine which usually of the several compounds was created from the beginning material. The third compound was your oxidation of both alcohols. This could not need been my product as a result of results of my VENTOSEAR. I had an extensive large consumption is the selection of 3200 to 3500 wavenumbers. This indicates the presence of an liquor. If my own compound had been fully oxidized then there would be no this sort of alcohol present. Also, because of my MARCHAR, I know that my substance was another one of the 2 ingredients because of the good sharp absorption at 1705 wavenumbers. This indicates the presence of a carbonyl. Also, my a couple of, 4-DNP check was confident. Therefore I were required to prove which will of the two compounds my final merchandise was. The first was your oxidation of the primary liquor, forming an aldehyde and a secondary alcoholic beverages. This could not have been my product as the Tollens test. My test out was unfavorable indicating not any such aldehyde. Also, the textbook claims that aldehydes show a couple of characteristic absorptions in the variety of 2720-2820 wavenumbers. No such absorptions were present in my sample. For that reason my final product was your oxidation from the secondary liquor. My last product had a primary alcoholic beverages and the second ketone
Poor Things
I seriously dont have that many bad what you should write about. I forgot to shake my sep channel after my first addition of dichloromethane. I had to redo that step. As well, there is a incredibly slight chance that a little bit of dichloromethane might have been left inside my final merchandise. When I was distilling, I believed I had boiled away every thing in my flask. The dichloromethane distilled in 39. a few degrees. To avoid distilling to dryness, We removed the heat. However , there were still several product left. I just couldnt see it quickly. I believe that a lot of of the dichloromethane that was left following removing the heat was eventually removed while the flask was cooling. Also, I would like to have seen my ketone compression a little higher in wavenumber. As stated in the book, an unknown at an compression of 1750 wavenumber most certainly is a ketone. The compression of my ketone just visited 1705. It may have been impact by something more important. Perhaps it may have been dichloromethane. My yield could have been superior by being even more careful with my flushes. If I had been much more cautious while distancing layers, I really could have had even more product. This will have taken more hours however.
Main Idea
In an oxidation reaction a great alcohol is usually converted to carbonyl. This carbonyl can either become an aldehyde or a ketone. In organic and natural chemistry it is vital to be able to choose certain groups over another. In this test, the secondary alcohol is usually selected in the primary alcoholic beverages. In many cases the primary alcohol could be oxidized all the way a carboxylic acid. In order to achieve selectivity, sodium hypochlorite is used. It truly is reacted with acetic acid to create HOCl. In that case HOCl can be reacted excessively with the liquor compound to push the reaction towards the right by which OCl changes the OH. Then water is added. It abstracts a hydrogen and the hydrogens electrons form a dual bond for the oxygen. The chlorine is usually expelled while this double bond is formed. Temperature is likewise important through this reaction. The temperature need to stay below 30 deg Celsius to keep the selectivity. PCC and PDC could also be used to do similar procedure tend to be cancer suspect agents. Applying bleach is much safer. 3 tests are used to identify the merchandise. I in brief discussed these people earlier in my first section. An VENTOSEAR is first applied. This tells me what useful groups exist. The two locations that I are looking at will be 3200-3500 and 1600-1800. This lets me understand if I have an alcohol and a carbonyl. I had both of these in my final product. Two classification tests were utilized to find out if I had formed certain functional groups. a couple of, 4-DNP is a first. It tells me i have an aldehyde or a ketone. In this case a precipitate varieties after the nucleophilic nitrogen within the 2, 4-DNP replaces the oxygen within the carbonyl. This kind of derivative is usually an lemon precipitate and it is easily recognized. I had a precipitate and for that reason I had either an aldehyde or a ketone. The last test out is the Tollens test. The Tollens test is only an optimistic test to get aldehydes. This forms sterling silver when it further oxidizes the aldehyde. The silver forms a metallic mirror at the bottom of the check tube. A good test was easily recognized when I performed a test out on benzaldehyde. My final product was definitely not great for this evaluation. By compiling the data via each of these checks, it is very easy to determine what functional group is selected over the other. The secondary liquor is oxidized and the major alcohol is definitely not.
