Organic Definition and 449 Threads

Hello , could someone tell me ,where to find Resonant frequency of the chemical bond of the following Volatile organic compounds: Propene,Toluene,Benzene,Ethylbenzene. Thanks in advance .

Hello everybody :) I have a problem understanding the different types of pi -> pi * transition of organic compounds. I can't understand what's the difference between K-band, B- band, and E-bands, and I cannot find any explanation on the internet. Also I don't understand why benzene has two E...

I am currently working on turbine design for small scale ORC system to produce power from low-enthalpy heat source. In ORC, turbine inlet pressure and flow rate are controlled by pump, and turbine inlet temperature is determined by evaporator when the flow rate of refrigerant and enthalpy of...

Homework Statement : [/B]The correct relation is: A. x=y B. x>y C. x<y D. None. Please refer to picture attached.Homework Equations : [/B]As stability increases, bond length decreases. When a Π bond is delocalised i.e it takes part in resonance, stability increases.The Attempt at a Solution I...

Homework Statement Predict major product and what type of reaction mechanism Homework EquationsThe Attempt at a Solution Top Problem: So the Bromine is a good leaving group, and is in the secondary position so you cannot rule out anything right away. The nucleophile is charged, so it will be...

Which property of compounds, organic ones in particular, can help us predict their charge(s) at a specific pH? Is pKa/pKb the only one? I would like some confirmation on this. Thank you very much!

Could someone explain to me why the ring structures in this photo are diastereomers? From looking at them, I see a plane of symmetry, and no chiral centers so I'm unsure how they're diastereomers without have R/S characteristics

I would like to buy a textbook to learn about this subject, and I was wondering if anyone had any ideas on what to buy, thank you very much for any responses. Not too expensive please. I am teaching this to my self if matters. Not part of university or other courses.

What are the differences between 1) Metal Organic Frameworks (MOFs), 2) Covalent Organic Polymers (COFs) and 3) Porous Organic Polymers (POPs)?? 2 are the same like 1, but there is no coordination bond just covalent bonds? 3 there is no metal atom? how to distinguish between such a similar species?

Homework Statement In is more acidic than but In (para nitro phenol) is more acidic than (ortho nitro phenol) why? Homework Equations in ortho nitro benzoic acid due to -I and -M effect it is more acidic than it's para species (-I effect more in ortho position) . The Attempt at a...

Homework Statement In pyrrole the electron density is maximum on which carbon atom? so if the numbering starts from nitrogen, the carbon on the right side of nitrogen let it be numbered as 2 and the next one as 3 and so on... which of the following options will have the carbons of maximum...

I have an assignment in which I must find a named reaction, the original reference to it, and show what experimental evidence was used to develop the reactions mechanism. So far I've had no luck finding anything. It's hard enough finding the original reference and so far I haven't been able to...

Homework Statement Need help naming these 2 molecules: Homework EquationsThe Attempt at a Solution I think they are: ethoxycyclohexane 5-chloro-2-ethenyl-4-iodobenzonitrile

Hi. I have a question about Organic and Physical Chemistry. I have already finished General Chemistry I and II and got decent scores on both of them (B on both of them). I am interested in taking Organic Chemistry, then Physical Chemistry afterwards. I know that both are different from General...

I'm trying to make a low temp heat exchanger but feeling difficulty in selecting a type of organic fluid some are very toxic, some are not environment friendly. Is there anyone who could suggest me the working organic fluid but it should not be water.

Homework Statement Why is ethanol a bad choice for recrystallization of phthalic acid? 2. The attempt at a solution I know phthalic acid is very soluble in water, so water is a great candidate to recrystallize phthalic acid. I also know water and ethanol are not miscible. But I don't know how...

Whenever I have a stain (paint, glue etc), I attempt removing it after the following scheme (if unsuccessful, I proceed to the next solvent): Water, soapy water, alcohol, white spirit, acetone. My question is... Is it possible to chemically PREDICT which solvent will be succesqsful on which...

Is it possible to do a Friedel-Crafts reaction on a benzene and get a substituent on the benzene ring from that, and then afterwards add an NH2 group ortho? I know you can't add NH2 first and then do Friedel-Crafts because anilines cannot undergo Friedel-Crafts. Please advice. Thanks in advance.

Homework Statement Homework EquationsThe Attempt at a Solution Firstly I tried to find the empirical formula: C : H : O 65.2 : 8.75 : 26.05 (mass) 5.43 : 8.75 : 1.628 (mol) 3.34 : 5.37 : 1 10 : 16 : 3 C10H16O3 This gives a molecular mass of 184. Now with the structure: It has to...

Homework Statement The following substances have approximately the same relative molecular mass. Which is likely to have the highest boiling point? Homework EquationsThe Attempt at a Solution I chose E as it has OH so therefore hydrogen bonding. Is this correct? Cheers!

I got a D in Gen Chem 1 and a D+ in Gen Chem 2. Mostly because of missing homeworks and I was taking 5 classes at the same time. But when I restudied both of them, and took Organic Chemistry, I managed to get A- in both Orgo 1 and 2. How will graduate school see this? And also, if I were to...

Homework Statement Propose a given synthesis of each of the following compounds starting with 1-butene a) 2-chlorobutane b) 2-methoxybutane c) 2-butanamine d) 2-butene (mixture of cis and trans) e) butane The attempt at a solution I have the structures for 1-butene, as well as each of the...

Hello, I want to rank the following compounds in order of basicity: trimethylamine, tetramethylammonium chloride, 4-nitroaniline, aniline, acetanilide, 4-methylaniline. I think this is the order, but I'm not sure for the last ones. trimethylamine > 4-methylamine > aniline > 4-nitroaniline >...

Hi everyone. I was bashing my head against this compound. I thought that the correct name for it was 4-ethyl-1-heptanol since apparently the longest parent chain has eight carbons. Could anyone please advise if my answer is correct, and if not, what I did wrong? Thanks in advance

1. Homework Statement For part a), I know that it is a nucleophilic addition reaction of CN- to form cynohydrin, but how come there are 2N atoms in E? How does NH4+ react with CH3CHO or the cynohydrin formed? For part b), what reaction is this? Homework EquationsThe Attempt at a Solution

This is a post sharing some easy to follow tutorials for students majoring in organic chemistry. Hope people in related needs can benefit from this resource.1, ChemDraw Magic - an advanced video lasts less than 15 minutes on drawing molecules faster. As an introduction, the presenter drew Viagra...

Hello, I will be taking Organic Chemistry 1 in the fall. I've been reading some sections of organic chemistry 8th edition by john e. mcmurry. This book is required and I was wondering if there's any other chemistry books. When I read it, it makes it hard for me to understand what it's saying...

Two questions: 1. What tools and techniques are typically used to determine and plot spatial distributions of compounds--particularly organic ones--in interstellar dust? 2. Is it presently possible to determine distributions of compounds along arcs distant from the galactic center? If so, can...

Any polarised light's plane is shifted while passing from one medium to another for refraction. So, optically active or not, a solution of any compound will cause refraction because of its density. Then what's special in an optically active compound?

I found this book while searching online for something and thought some people here might like to see it. It's an organic chemistry course from 1912. http://djm.cc/library/Principles_of_Organic_Chemistry_Norris_edited.pdf

What is the advantages of organic superconductor rather than konvensional and high Tc superconductor? Thanks

I'm having a lot of trouble predicting which compounds would be extracted into which layer (organic vs. aqueous) using acids and bases. Using the solvents dichloromethane (which would form the organic layer) and sodium hydroxide (would form the aqueous layer along with water), I am asked to...

Homework Statement Synthesize 1-chloro-3-ethyl-5-nitrobenzene. Assume you have benzene, chloroethane, acetyl chloride, NaCl, Cl2, AlCl3, FeCl3, NH2NH2, Zn, KOH, HNO3, H2SO4, and HCl. Homework Equations none. The Attempt at a Solution I started with benzene. I did a Friedel-crafts on...

Dear PF Forum, Next month there will be an environment activist gathering in my church. I want to introduce to them one of the benefits of organic waste. It's methane production. Organic waste will produce methane, and in turn it is the source of energy. What I want to know is how much methane...

Homework Statement State true or false: The boiling point of propanoic acid is less than that of n-butyl alcohol, an alcohol of comparable molecular weight. Homework EquationsThe Attempt at a Solution Is this just a question where you either know it or don't OR is there some argument based off...

hi i am in the natural cosmetics industry and would like to have a scientific understanding of my craft. Accordingly do i study chemistry, organic chemistry or is there something else i should be looking at.many thks

Is there a good book that contains various methods for qualitative analysis of organic compounds? (Like Tollens test for aldehydes).

CH3Br + Nu- → CH3Nu + Br- The decreasing order of the rate of the above reaction with the following nucleophiles is: [ Nu = (I) PhO- (II) AcO- (III) HO- (IV) CH3O- ] My answer is IV > III > II > I However the answer is IV > III > I > II I'm having a hard time understanding why...

I am having some trouble understanding why different sources of bromine radicals supposedly brominate an alkene at different positions. What I mean by this: In the first example, the Bromine radical attacks a hydrogen at the allylic position and then a termination reaction results in a Bromine...

Homework Statement Homework EquationsThe Attempt at a Solution I can't seem to see how an organic ion with charge -3 is formed. I thought an organic ion will always have a charge of -1? Like sodium ethoxide CH3CH2CO-Na+ ? I know that Na can only react with alcohols and carboxylic acids, so B...

I've been thumbing back through my organic synthesis book to try and remember how to reduce a carboxylic functional group. I know how to do partial reduction to primary alcohols, or create aldehydes and or acyl halides. But isn't there a way to completely reduce it all the way to a hydrocarbon...

I have a couple of questions about nanotechnology. Are nanobots like organic cells in anyway? Meaning do they perform the same functions as organic cells, in terms of delivering energy within the machine they operate in? And what powers nanobots? Do they have their own power supply like a...

Homework Statement ______________Stgae 1 [/B] P:C3H6O -----> _________________Br2 in organic solvent Q:C3H6OBr2 Stage 2 -->R:C3H5Br3 1.What is the structural formula of P and Q respectively? 2.What is the reagents in the conversion of Q to R?? (1) Phosphorous tribromide liquid (2)...

I just bought this book: March's Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (link: https://books.google.co.in/books/about/March_s_Advanced_Organic_Chemistry.html?id=JDR-nZpojeEC&hl=en) But I found that it starts with complex reactions and contains lots of NMR spectra...

Hello, I am interested in possibly fabricating microprocessors if I make it through school. I have yet to take my first course in organic chemistry. Will I have to know anything about organic chemistry if I am to fabricate microprocessors? Do you know if organic chemistry is employed in the...

I performed column cromatography on an oil, and used carbon boiling chips but got some weird IR. I used hexanes and acetone as solvents, I am trying to figure out some of the spikes, soo I am thinking that maybe the boiling stone being carbon could acted as activated carbon and absorbed some...

I found this in "March's Advanced organic chemistry" After that step, on using HCl in pentane, you will get 4-methyl-3-Heptanone. So this method was used to convert achiral 2-pentanone to a chiral compound, by first converting it to the compound on left by addition reaction and then using a 2...

Is sulfuric acid reacts with all organic compounds?

Homework Statement I did a question in which positive charge was unstable near to ##-CD_3## group but was stable near to ##CH_3## group. Homework EquationsThe Attempt at a Solution Why is it like that? Is deuterium less active for hyperconjugation or it causes more steric hindrance? What's...

(@mfb posted an article about this here, I think it deserves an own thread, and I did not find one, so I start one :smile:) The comet-like composition of a protoplanetary disk as revealed by complex cyanides Karin I. Öberg, Viviana V. Guzmán, Kenji Furuya, Chunhua Qi, Yuri Aikawa, Sean M...