Benzene Definition and 55 Threads

The name of this molecule is 1‐(3‐nitrophenyl)ethanol. I'm confused why ethanol is treated as the parent chain in this case, not the phenyl group. If the ring is composed of more atoms, should it be the parent chain? Thank you.

So, I'm a little surprised this didn't get posted sooner (maybe that's my answer?), but a recent study found Benzene in a lot of sunscreens: https://www.valisure.com/blog/valisure-news/valisure-detects-benzene-in-sunscreen/ And the organization started a petition to recall them...

I understand the first one, which indicates that there is a phenyl group in the second carbon of pentane. But where did the 2 in 2-pentylbenzene come from? Shouldn't if it be just pentylbenzene, since there is only one subtitute(pentane) on the benzene? If not, would you explain why? Thank you.

Consider any -R effect showing group like NO2 in place of anyone of the hydrogen of the benzene ring, here we get nitrobenzene. We know that after showing -R effect a double bond will be formed between N and C and one of the π bond will no longer be present in the ring and it's place will be...

Hello, My sources seem to contradict here - one claims that it should be carried out at room temperature, while the other suggests that heating under reflux is necessary. Could someone please clarify this for me? Many thanks.

Homework Statement Compare resonance energy per ring in benzene, napthalene and anthracene Homework Equations -- The Attempt at a Solution I know Resonance energy of benzene is 36 KCal/mol, I also know anthracene is the most stable followed by napthalene so their resonance energy is in the...

Hello, wondering if anyone can confirm if 7% Sodium Hypochlorite and alkyl benzene sulfonic acid are compatible to mix together? Any concerns or reactions to be aware of?

Presuming I have 3,5-dimethyl-4-nitro-benzaldehyde, and what I want is 2,6-methyl-nitrobenzene (same molecule, minus the -COH) is there a straightfortward way to do this conversion? Oxidizing it away seems risky: I don't want the -CH3 groups to go all -COOH on me, but I'm not an experienced...

Homework Statement What will result in the reaction of benzene with acetone in sulfuric acid? Homework Equations The Attempt at a Solution Is bisphenyl correct?

I have been trying to come up with a way to get from some small carbon molecules (C2,C3) to benzene, or its singly substituted friends like phenol, aniline, or benzoic acid. I stumbled upon a trimerization of acetone to mesitylene (3 C3H7O --> C6H3(CH3)3 + 3H2O) which can be oxidized (via...

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.

Acidity increases with resonance, but why under the presence of bulky group attached to benzene in ortho position increase acidity ? Under such cases, the planarity is broken and resonance is no longer possible between attached group and benzene hence the charges have to maintain their original...

Are ortho substituted benzene rings aromatic in nature as the planarity in such compounds breaks due to steric hindrance ?

How many NMR signals and peaks will there be for a di-substituted benzene ring and why? The ring has one CH3 and and a Cl ortho to the CH3. (This isn't a homework problem but I am running into same issue whenever I encounter rings wrt NMR) i am specifically confused as to how to apply...

the carbon in benzene is sp2 hybridized and the p orbital is involved in double bond.sp2 orbitals and p orbitals are perpendicular to each other,for any electronic transition between orbitals,the orbitals should not be perpendicular.so how does pi electron go to carbon's orbital?

Hi all, I want to measure the concentration of benzene or toluene, in water with a GC, FID detectors. I put benzene in water with an adsorbent and after hours I've to test the concentration of benzene. In the lab we've already methanol and toluene, so I'm thinking to use toluene as pollutant...

Is the General Formula of benzene and diacetylene the same?:nb):nb):nb)

Hey, I didn't understand too much ( when reading my textbook) why benzene undergoes polyhalogenation when it contains a strong activator ( i.e: NH2) and reacted with bromine and FeBr3 as a catalyst. I was thinking because of the fact that there is a carbocation in every resonance structure...

Why does hydroquinone possesses non zero dipole moment? The OH groups present at para positions on the benzene ring should cancel the effect of each other...if there is a plane change then exactly in which cases molecules do change planes?

know benzene is colourless...but i can't seem to get my head around it at the moment! As benzene has delocalised electrons, it should require less energy to excite the electrons. And Visible light is a lower frequency to UV? So according to the equation: E=hv Benzene should be coloured as it...

Homework Statement in this case, the HNO3 can be dissociated into NO2+ and OH- ion. what makes it a proton donor. p/s : the ans is HNO3 is a proton donor for this question. Homework Equations The Attempt at a Solution since the HNO3 can be dissociated into NO2+ and OH- ion...

Homework Statement can i name the compound in the first photo as 1-chloro, 2nitro benzene can I name the second compound as 1-chloro-3-nitrobenzene? Homework Equations The Attempt at a Solution the ans from my book is inside the photo

Might be a stupid question but got to ask. The bonds of benzene have a bond dissociation energy in between that of a single C-C bond and an alkene yet its stability is much higher that expected due to aromaticity/e- delocalization. Is stability not necessarily reflected in bond dissociation...

I have some questions how various substituents are transfering benzene conjugated (π) electrons (i.e. activating/deactivating). As usual, no chemist provides an explanation. 1)As I see, the first important thing when forming a carbocation during electrophilic aromatic substitution is to find...

Homework Statement A uniform glass tube is bent into a U shape. Water is poured into the tube till it stands 10cm in each tube. Benzene (sp gr = 0.879) is then slowly added to the tube on the left side until the water rises 4cm on the right. What length is the column of benzene when the...

I want a small amount of benzene. Obviously it is not easily purchasable, but sodium benzoate is. I have heard one way is to dry distil sodium benzoate and sodium hydroxide, but the though of dealing with molten sodium hydroxide at such high temperatures sounds too dangerous. Is there any other...

Adsorption of Benzene using Activated Carbon - Increase in concentration!? I'm not quite sure where to post but here it goes. I'm performing an adsorption experiment of benzene from solution using commercial activated carbon. It is expected that the concentration of benzene would decrease...

Homework Statement In an experiment to determine how well benzene wets glass, benzene was found to rise to 1.71 mm in a certain capillary tube at 20.0 C. In the same tube, water rose 4.90 mm at 20.0 C. Calculate the contact angle for benzene, give that at 20.0 C, benzene = 0.879 gcm^-3...

Given 3 molescules: 1-chloropropane, 1-butyne, and a benzene ring, how do I synthesize 1-butyl-3-propylbenzene? my question is, how do I get 1-chloropropane or 1-butyne on the ring without having branching? these 2 must be the starting material. I don't see how F&C alkcylation would work.

Homework Statement Can NaOH deprotonate compound II? The Attempt at a Solution The solution says that it cannot, but I don't see why not! The benzene should not make it so basic such that it won't react with NaOH anymore, will it?

How does zinc convert phenol to benzene? Its a metal and why metals react with alcohols they displace the hydrogen right? However zinc converts phenol to benzene. Why is it so? Will all divalent metals convert it to benzene?

The molal freezing point depression constant of benzene is 5.07 K kg/mol. A .45% solution of monoclinic sulfur in benzene freezes .088K below the freezing point of pure benzene. Find the molecular formula of sulfur in benzene. Can someone tell me if the answer is S2 ? I guess I'm not...

Homework Statement Homework Equations - The Attempt at a Solution i understand that benzoate is derived from carboxylic acid (COOH) to which isopropyl has replaced the H, forming a benzoate substituent to which we derive the parent name of the structure. I understand that Chloro...

Homework Statement Hey guys, Our prof gave us a random question for our lab report: how do you get C6H5D from benzene? We've never gone over this rxn, and I can't find it in the text or online. I can't think of a way for benzene to substitute like that. Thanks, I appreciate the help...

Benzene forms the electron shell configuration of two rings of electrons, parallel to the molecule, shown here http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/Benzene_Orbitals.svg/750px-Benzene_Orbitals.svg.png so my question is, if an electron beam is run through the center of the...

Homework Statement Why are all the carbon-carbon bonds are the same length rather than alternating lengths? all help appreciated :) Homework Equations The Attempt at a Solution I researched it and all i discovered is that each bond length is the same in Benzene, but i never found...

Why do pi electrons in a benzene move?

Is there anyway that a Ketone on a benzene ring could be reduced to a hydrocarbon with the use of H2, Pd/C, 45 psi ? I know that carbonyls on aromatic rings are able to be reduced to alcohols via this method but would be interested in if it is possible (more so then practical) to fully reduce to...

How easily do benzene molecules interact with london forces? I imagine that the relatively large surface area of the aromatic ring coupled with the pi-ring, which is a pretty large orbital makes london forces of a pretty large magnitude possible, but I am not certain. Does anyone have any...

Homework Statement the molecular formula of the compound under analysis is C8H8O2 = Mr of 136 the mass spectrum shows the peak at 91 to be the most stable. I'm supposed to obtain structures representing the peak at 91 as well as at 118 and 65 The Attempt at a Solution I represented 91...

I had a question on a chem exam about which difluorobenzene isomer will have the highest boiling point. Obviously it is the ortho isomer, since the dipole will be stronger than the meta or para isomers. The question I have is more for my own curiosity than anything else really. Does it matter...

Can you consider a benzene ring to also be an alkene? As in, there are double bonds within the benzene ring.

Hi , How to calculate the diploe vector of benzene ring?. what is the formula for calculating the diploe moment?. Thanks in advance Aneesh

Homework Statement In a vessel, a layer of benzene (n=1.50) 6 cm deep floats on water (n=1.33) 4 cm deep. Determine the apparent distance of the bottom of the vessel below the upper surface of the benzene when viewed vertically through air. Ans 7 cm Homework Equations Snell's law n sin...

Hey Is it right that high symmetry molecules does not absorb light as good as low symmetry molecules? let's take an example like benzene versus benzene+hydroxyl?

Because of the delocalized bonding in graphite, graphite is able to conduct electricity. I'd figure benzene, which has a similar structure, would be able to conduct electricity. Is this so?

Homework Statement We're given various temperature and pressure values for benzene as well as its melting point and densities for when it's a solid and when it's a liquid. We're asked to construct a phase diagram based on the given data and locate the triple point - graphically and...

Homework Statement There's a benzene ring with both OH and H attatched to the same carbon atom on the benzene ring and I was wondering what this molecule would be called. The Attempt at a Solution I thought it might be an acid group attached to the benzene ring but wouldn't there...

1. Consider a stoppered flask containing benzene, iodine, and air, which has reached equilibrium at 298K. Which one of the following statements converning the system at equilibrium is true? a) The pressure of the vapour phase is not constant b) Evaporation of the liquid continues. c) The...

Can someone explain why this is so or atleast nudge me in the right direction?