Organic Chemistry

So this is linked to my other, broader question but since I don't have any replies yet I figure I'd ask this seperately. Nitrosobenzene, so Ph-N=O. How would the reaction mechanics work for an addition reaction to a carbon chain with a double bond? It should end up binding the N to the carbon chain and splitting off the O (presumably as water).

Can someone please explain to me these questions: http://imgur.com/a/uzHNQ I thought a 3.7ppm indicated ether, however it is apparently an aldehyde proton?

Hi everyone, I wonder if I could tap the knowledge out there in the community: http://dsc.discovery.com/videos/mythbusters-can-chocolate-stop-acid.html During the presentation above, chocolate is exposed to sulfuric acid from a leak in a sulphuric acid container, the resulting sticky brown putty plugs the leak. The sticky brown mass is named in the video, but I cannot make it out. Is anyone able to name the substance or point to any relevant literature on the subject? Much appreciated! Thomsonc

in the saponification process, does sodium hydroxide always give a 'hard' soap, and potassium hydroxide a 'soft' or 'liquid soap'? or are there exceptions?

Hi All, We had some severe winds a while ago and 5 of my solar panels got blown off and the glass has shattered (and come off in some places), like the car windscreen, little cubes etc. The glass has been adhererd to the ploy crystals with a sheet of EVA 'glue' - i have heard tha a temperature of 120°C is used for this process. Since the EVA is a 'chemical', can it be dissolved? Some suggested using thinners - but i'm not sure what to do. If i used a blow torch would it melt the glue, then pick off the glass? The panels are 80W and are the BP brand. I actually found the company that sells the EVA sheeting to BP and emailed them for assistance - as they…

The responses to the following question are to act as the control group for a blind study on an outside forum regarding the willingness to understand the fundamental principles of organic chemistry. Note: Only novice or lay chemists are asked to respond. If you have or are studying for any academic accreditation please do not post a reply to this thread. If you see this question or equation being discussed on an outside forum please do not participate, that is the study group. Question: Explain the organic chemistry principle and function of H2O + HCl <=> H3O+ + Cl- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ It's a comprehension question t…

according to this site http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html (there are others) a change in the temperature of water changes the pH level of that water. I'm having trouble understanding it beyond, a temp rise of the water lowers the pH of that water, & wondered if anyone here could tell me how much a rise 0.6°C would lower a pH of 8.2 thanks for any feedback MB

Recently , I put some coal on the fire and noticed an unusually high frequency of popping sounds and sparking with the expulsion of small pieces of material . I examined some unburnt coal and saw what appeared to be thin metallic layers , of the colour of copper and zinc , on the surface of some pieces . I also snapped some pieces and there are layers of these metals , assuming they are metals , in thin layers like pages in a book . The momentum of a typically ejected piece seems quite high compared to usual and I was wondering how the metals and the coal were interacting with the air to give these results . Any thoughts ?

The way my teacher structures his questions is by giving you all the reagents and expecting you to know the products. After the reagents, there is/are bold face numbers, those correspond to how many answers he expects. The following are some practice problems, I did all but 1 problem, and I was hoping that it can be proofread and corrected. The questions with stars next to them are the ones that I'm not 100% sure about. The only one I didn't do was the one that has answers 38 + 39 Thank you in advance for the help

There has been a depressing lack of good organic chemistry threads of late, so I thought I might start spark some conversation. A topic I've always found rather amusing is that of Click chemistry. It seems to evoke so many conflicting emotions amongst the chemists that I know - some spit at it in disgust, some (I'm sure) have shrines dedicated to Barry Sharpless in their offices, while others question whether or not it exists at all. For those of you aren't aware of what it takes to be a Clickalicious reaction, or who have never heard the term in their life, some background: Click chemistry is quoted in wikipedia as a 'chemical philosophy' - a term I rather agree …

In the attached pdf excerpt*, Heng Jiang et. al. describes the catalysis of the peroxidation of propanone (acetone) with stannic chloride pentahydrate in 30% hydrogen peroxide at room temperature. This is in contrast to the usual method (oxidation via persulfuric acid generated in situ via reaction between sulfuric acid and hydrogen peroxide), where great care must be taken to control the temperature to prevent the formation of the dangerously labile dimeric form. My questions are as follows: 1. Do the peroxysulfuric or hydrochloric syntheses employed by amateur explosives enthusiasts produce the tetramer in any significant amount (as a percentage of total peroxypropa…

Hey guys, I'm currently doing an undergrad research at RMC in Kingston, Ontario, Canada for the summer. I am testing different surfactants with metal compounds and registering the effects. (I can tell you more about that if you want) I already used CTAB and Triton X-100, I'm currently looking for more cationic surfactants. If someone could help me finding a list of cationic surfactants, I would be really grateful. Thanks a lot Axel

I have been tasked to reduce COD (from 50 000 ppm) to below 7000 ppm. My matrix is water (over 90%) and mixture of urea, formaldehyde, hydrocarabon (oil) and phenol. How do I reduce it? I have tried hydrogen peroxide but I was not succesful

So Im having a bit of trouble remembering how standard additions methods work and after going over my notes its still unclear. I know you have a sample of unknown concentration in a complex matrix so you add a sample of known concentration of the same type as the unknown and then somehow extrapolate the unknown concentration. I know its very simple but I cant seem to remember. If I remember correctly I did an experiment involving this and the concentration of iron in water. Can someone help clear this up?

I am trying to synthesize a chemical, but haven't found an appropriate procedure after surfing the web, looked at the online organic chemistry databases, looked in the encyclopedia of chemical technology etc. . Aldrich and a few others apparently know how to do this, but there does not seem to be any public information that I can find. Tried to figure it out for my aliphatic molecule myself by modifying a procedure for a similar aromatic without results. Asked on another forum for specific help with the procedure, but was told medical research is too risky. If you can answer any of these questions to help me make progress on my synthesis, please do: Procedu…

During the haloform reaction, the base hydrolysis of α,α,α-trihalocarbonyl compound gives the haloform as the final product. But why not the halogen groups are substituted by the OH- groups to give a trihydroxy compound which can lose water molecule to give finally an α keto acid?

Hi all, A few months ago, I posted about the use of IBX as an efficient oxidant to oxidise primary and seconday alcohols to aldehydes and ketones respectively. I've since found another use this, the efficient oxidation of primary alcohols to carboxylic acids without the need for transition metals. http://pubs.acs.org/doi/abs/10.1021/ol050875o In Situ Generation of o-Iodoxybenzoic Acid (IBX) and the Catalytic Use of It in Oxidation Reactions in the Presence of Oxone as a Co-oxidant This method is as good as the method for aldehyde oxidation. Using acetonitrile:water as the solvent, heated to 70oC, there is complete conversion to the corrosponding carboxyli…

Angiotensin coverting enzyme is one that is isolated and used in the reduction of high blood pressure (hypertension) . Drugs called ACE inhibitors. Im at a loss as to what is the purpose of this enzyme in the lung , Can anyone shed some light on this confusing matter DH

What is special about protein in egg white such that it denatures upon heating and then aggregates again, making it opaque? Is it possible to take protein powder solution (like from Power Shakes, etc), heat it up and observe the same affect? If not, is is because the mol weights albumin is so much higher than that in commonly used powders? Or phrased another way, "Can this effect be simulated with off the shelf protein supplements, or is this effect ONLY with egg protein?"

friends............ if you are a good grade scorer in chemistry pls help me.. you won't beleive this.i get first grade in physics.maths bilogy,but third grade in chemistry.i really found it very hard to digest this thing..if you are a good scorer in chemistry pls help me.as it might have become a habit to you but i reallly can't read chemistry it is such a boredom subject..! unfortunately chemistry is very important in both medicine as well as engineering .pls without having any strange feeling that you are a helping a stranger , help mee...!

I have a question that asks which substance will pass through a plain (no channels, etc.) lipid bilayer cell membrane the fastest. The answer is CO2. My guess was O2. I figured since CO2 contains two different atoms, you'd have more opportunity for a partial dipole across the molecule. It's also larger.

Does anyone know of any acids that are pretty safe to humans (not very dangerous to skin) that can eat away a small hole in a standard party type balloon and pop it? Thanks, Jason

Hi: According to http://en.wikipedia.org/wiki/Thiol#Acidity "Relative to the alcohols, thiols are fairly acidic" Does this mean all thiols have a pH below 7? Thanks, Green Xenon

Hi, I have been trying to form an analine derivative of crotonic acid, but after three trials a dont get any crystalls. I was guessing that the reasing may be that my acid has a vlow melting poing. Any advise? Thanks.

how much is required to build up a tolerence and over what time period