Organic Definition and 432 Threads

(maybe it fits better in this forum) Hello, I have been asked an advice about waste heat to power systems (say wh2p). The available waste heat to be considered is a (dirty) gas in a temperature range between 250°C and 450°C. The useful power that could be generated would range between...

Alkanes are saturated hydrocarbons which are very unreactive. However, they undergo combustion, i.e. they react with oxygen. Why? (Even compounds as unreactive as polythene with over thousands of carbon atoms per molecule undergoes combustion...)

There is lots of talk about how hard Organic Chemistry is, so I ask, what did you think of Organic Chemistry if you took it, and how did you excel at it if you did? What were your weaknesses?

This is for a friend: The worksheet says: Name the following comounds: It has a picture, which is a benzene ring with 2 PhD groups off the 1 and 2 positions. Is also says "THis one is a pun. See if you can figure it out!" Thanks, nkk

For example, what happens if you put an apple in space? Or what happens when animals (or people) are frozen to very low temperatures?

Homework Statement A question on a pretest asks me to name this. I know it's either (1R,2R) or (1S,2S)1,2-Cyclopentanediol because the OH's are facing in opposite directions, but I'm not sure how to figure out if the OH's are S or R 2. The attempt at a solution I somewhat have an...

Hi guys, I've got a question which i couldn't solve. Both napthalene (two benzene ring join together) and benzoic acid are aromatic compounds which exist as white solids. Based on their physical ahd chemical properties, describe how you could separate the components of a mixture of these...

Over the past month, with the approaching date of the Copenhagen summit, several news and scientific articles have been prominently dedicated to various environmental issues, namely organic farming, the sustainability of keeping high levels of meat in our diets and its growth in developing...

i know this is a physics forum, but i figure you guys might like chemistry too? and i know you guys probably took up to orgo to get your physics degrees. anyways over the summer session assuming i pass my current classes and my classes in the spring, i will be taking orgo 1, orgo 2, and...

Alright, I've got a bunch of physical data and an IR Spectrum, but somehow it doesn't seem to match up with any compound I find through google. Even worse, I have a list of compounds it should be and there's still no obvious winner. Any help is dearly appreciated. Clear, yellowish liquid...

Im trying to name the following molecules 1- CH3-CH2-CH-CH2-CH-CH2-CH2-CH3 l l CH3 CH2 l CH3 2- CH3-CH2-CH-CH2-CH-CH3 l l CH2 CH2...

!Organic chemistry reaction I just wonder is there any ways to predict the catalyst and other conditions for a certain organic reaction to happen?

Homework Statement The experiment was changing dimethyl maleate into dimethyl fumerate, with the intent of being analogous to changing maleic acid into fumeric acid. In the experiment, we added 1 M Bromine in dimethylchlorine to our dimethyl fumerate, put the mixture in a hot water bath and...

Homework Statement Hello all. Im not sure how to get the image of the organic compound i need to name on here, but I think I can do a good job of describing it. The compound I need to name is a cycloheptane with three substituents on it. These substituents are bonded to three consecutive...

Organic Chemistry Reactions - Check my Answers, Please! :) this is the lab that we have to do in class: http://academics.eckerd.edu/instructor/grove/gorgchem/Extraction%20Lab.pdf http://picasaweb.google.com/lh/photo/cnIZmcws9cN3v_1TDx7nfg?authkey=Gv1sRgCI-xv4Hl9tampgE&feat=directlink

Hi, I'm going to be taking O chem this quarter in college. I took a year of general chemistry last year, but didn't do so well in the first two out of three quarters. Now I think that I don't remember anything from general chemistry. what do i do?

I have Been wondering a lot that why we cannot separate the organic compounds from the functional groups. And this is not established by the inorganic compounds! What looks strange to me even more is that whenever a reaction occurs we face the functional group and these functional group are...

can someone help me with this question? Draw the most important resonance contributor of the following structure? if its to small http://img196.imageshack.us/img196/8417/48084902.jpg

Homework Statement A chemist has three liquids (Ethanol, butanoic acid and 3-heptyne) labelled P,Q,R (in no specific order). When drops of bromine solution were added to samples of each liquid, P and Q decolorised the bromine, but R did not. When drops of sodium carbonate solution were added...

In the Diels-Alder reaction between anthracene and maleic anhydride, why is it carried out in xylenes rather than in ethanol?

Homework Statement CH3CH=CHCH3 What's the cis and trans structure name for this formula? Homework Equations The Attempt at a Solution I've drew the ciis and trans structure H\ /H C = C / \ CH3 CH3 this is the cis the tran is similar to...

1. In the chair conformation, why would 1-bromo-tetrahydropyran be more stable in the axial position, as opposed to the equitorial position? (Hint: consider how the bromo group affects the attached carbon and what the oxygen could do to alleviate that.) 2. No relevant equations 3...

Homework Statement An alkene H---C=C---F ____|_| ___Cl__I reacts with H2 in the presence of Pt. What will the dominant product be? Homework Equations See below. The Attempt at a Solution Syn addition will occur, so the hydrogen atoms will either be in the front or...

Hi, I'm in first year organic chem and we're obviously learning about all the different reaction mechanisms (e.g. elim reactions of alcohols) and I was wondering if the only way to figure out what is going to happen in a particular reaction is to memorize all these different reaction...

After promoting one of the electrons in the 2s orbital, the 2s orbital and two of the 2p orbitals undergo hybridization to form three sp2 orbitals, leaving the other 2p orbital unhybridized. But why is the hybridization necessary? Isn't the three 2p orbitals sufficient to form three identical...

http://www.telegraph.co.uk/earth/earthnews/5835975/Arctic-sea-full-of-huge-blobs-of-floating-goo.html http://www.adn.com/2835/story/864687.html Anyone else heard about this yet? Are we under attack from some alien life form? :o Any theories as to what could explain this? Edit...

Homework Statement When 100 mL of an aqueous solution containing 1.0 g of caffeine is extracted with 10 mL of chloroform at room temperature, 0.5 g of caffeine is transferred to the chloroform layer. Calculate the distribution coefficient of caffeine between chloroform and water at room...

Homework Statement We did an experiment in lab today where we were given a compound and we had to figure out the chemical formula and molar mass using titration (titrated with NaOH). The compound I got was phthalic acid, and the average molar mass I got was ~135g. This is about 30 grams off of...

So what is the difference between thimerosal and straight mercury? Is it more or less harmful?

Homework Statement When reacting chloroethane with sodium hydroxide, what are the products? The Attempt at a Solution I think there are two possible solutions to this problem. One possible solution is ethanol and sodium chloride, through a substitution reaction. Another solution could...

Homework Statement Modern organic chemistry is the study of: a) only molecular compounds b) only petrochemicals c) only natural molecules d) molecules of carbon The Attempt at a Solution I think the answer is c) because organic chemistry looks at molecules of (dead) plants...

can degree of freedom and phase rule be applied to organic reactions,is it possible to degree of freedom above 3?

and why is biochemistry important in medicine? I kind of know why, but i can't find that much information so I am stuck and i need a bit of help if anyone could help me? Ive read that organic chemistry serves as a basis of biochemistry and biochemistry is the study of chemical processes in...

Hi. I was to plan and conduct the reduction of 4-t-butylcyclohexanone into 4-t-butylcyclohexanol using NaBH4 as reducing agent, MeOH as solvent, and NH4Cl. My question is about the use of NH4Cl. How does it act as a quenching agent? I've figured out that it acts as a quenching agent by removing...

This is a general Organic Chemistry question. How do the reactivities of the following compare? Acyl Chlorides, Esters, Anhydrides, Amides, Ketones, Aldehydes The Attempt at a Solution I know the following "ladder:" MOST REACTIVE acyl chloride anhydride ester amide LEAST...

Homework Statement I am given isobutane as my starting material, Br2 and benzoyl peroxide as my radical initiators. My final product is the isobutane with Br attached instead of H. I have to design the mechanism. I have tried what seems like an endless combination of mechanism attempts...

I have a question about evaporation of organic solvents and the leftover sample after this is done. (sample dissolved in the organic solvent) Does the sample, leftover after the evaporation of a organic solvent, (used to dissolve the sample) affect the analysis of the dry sample? (basically...

http://chemistry.boisestate.edu/people/richardbanks/organic/nomenclature/aromatic3.gif is called o-methylethylbenzene, why isn't it instead called o-ethylmethylbenzene? I thought it was alphabetical

Hey guys, I have a quick question. I signed up to take Organic over the summer trying to get in all the pre-reqs for a 2+4 Pharm-D program. I would really like to do well in this class and was wondering is there anything I should review or any good study habits or methods I can use to ace...

At present I am still uncertain about my academic education (that is, which subject to study). If I were to decide on chemistry, would you commend organic or inorganic chemistry? Why? How are the two different when it comes to studying them? Answers are appreciated.

Homework Statement I am trying to figure out what is produced from the reaction of sodium borohydride and methyl benzoate. How would you name it? I am really bad at nomenclature... Homework Equations NaBH4 + C6H5COOCH3The Attempt at a Solution My result is bascially methyl benzoate, but...

Hello, I am a physics undergrad...getting ready for my final semester this summer. I have to take a chemistry class (actually, anything above a first General Chemistry class). It just so happens that the ONLY such Chem class they offer (small school) during my final semester is Organic...

Since Benedict's test is testing for the presence of a reducing agent (in the form of a carbohydrate), would that not mean it would give a false positive if acid was present (i.e. is acid not considered to be a reducing agent, it being a proton donor)?

Hi, I am supposed to design 2 experiments for my senior year Chem class. Right now I cannot think of anything that is interesting, relatively advanced but at the same time at a high school level (its only a design lab so I can include advanced equipments). Topics that interest me the...

Okay, so I'm having trouble with a question on a Pre-Lab assignment. The question is, "Acetanilide is more soluble in etyhl acetate than in hexane. Why? Draw the structures of etyl acetate and hexane in your explanation." So I know Acetandilide is polar, and hexane is a solvent for...

Homework Statement Draw and name all of the structural isomers of hydrocarbons with the formula C6H12 (cyclohexane). 2. Relevant information This is "only" a grade 11 Chemistry Assignment, therefore I only really need the basics when it comes to isomers- not some of the more complex...

Homework Statement Write a detailed mechanism for the following reaction: Attached picture Homework Equations N/A The Attempt at a Solution Okay, I know this is PART of the mechanism for the oxidation of a glycol by periodic acid which causes cleavage of the C-C bond between the...

Homework Statement I have a benzene ring with one methyl group attached and 1-butyne as the two reagents. The final product is a combinination of both into one molecule with the alkyne group in the butyne becoming an oxacyclopropane and the first carbon in the alkyne becoming attached to the...

I bought a pack from the organic market by my house. WOW WOW WOW. This is amazing. http://pro.corbis.com/images/OF007280.jpg?size=67&uid=%7B0D49653C-5825-496F-B49A-A113C233E388%7D Its paper thin slices of ham and is sooo good.

How do GM crops (both current and potential in the near future) compare with organic in terms of output per acre? How does it compete with such methods as Fukuoka Natural Farming, and other forms of permaculture?