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Hydrocarbons are compounds containing only hydrogen and carbon atoms. This tag should be applied when a saturated or an unsaturated hydrocarbon is the main focus. For aromatic hydrocarbons, use [tag:aromatic-compounds] instead. For halohydrocarbons or other functional derivatives, use [tag:halides] ...

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What is the reaction mechanism of aromatization of alkanes? [on hold]

In my textbook it is given that when n-alkanes having six or more carbon atoms is heated at 773K at 10-20 atmospheric pressure in the presence of oxides of vanadium, molybdenum or chromium supported ...
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1answer
15 views

Why are there distortions in electron cloud in molecules? How does increase surface area amplify these distortions?

In the physical properties of hydrocarbons,it is said that branched hydrocarbons have relatively less boiling point than it's linear form. From what I have learnt is that it is due to the increase in ...
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1answer
58 views

Why does benzene have 3 π–π* transitions in the UV range, but ethene, butadiene, and hexatriene each have only 1?

Are the π and π* orbitals of benzene much closer together in energy which allows for multiple transitions? Why is this not the case for hexatriene if they both contain the same number of pi bonds?
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23 views

Which one will have the maximun heat of hydrogenation and which one will have the least? [closed]

Is the inductive effect of ethyl group stronger than two methyl group? Which one will have the maximun heat of hydrogenation and which one will have the least?
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1answer
21 views

Organic reduction of alkene

Can Wolff Kishner and Clemmensen Method be used to reduce alkyne or alkene. If so do they produce syn addition or anti addition product. ?
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1answer
20 views

Help me for this question on stability [closed]

I start thinking like to check stability of a carbon compound we should check octet of carbon in these compounds But according to this approach answer should be D but the given answer is C *#answer ...
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18 views

Separation of organic monoprotic acid [closed]

0.100 mol of an organic monoprotic acid is partitioned between 50.0cm3 of benzene and 50.0 cm3 of water in a separating funnel. A 10cm3 aliquot of the aqueous layer is pipetted into a conical flask ...
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1answer
25 views

Production of ketones from alkanes

We can produce aldehydes in one step from alkanes, by using $\ce{O2}$ and $\ce{Mo2O3}$. Can we do this for ketones too? If not do we have another way?
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1answer
15 views

Can the inverse of a micelle be formed with non-polar solvents?

A micelle is formed due to the clustering of soap molecules wherein the interior of the cluster is formed by the hydrophobic end and the ionic ends are on the surface of the cluster. So, if a non-...
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0answers
34 views

Balancing a combustion reaction of 2 hydrocarbons

I have the following reaction: $\ce{C_nH_{2n+2} + C_mH_{2n-2} + x O2 -> y CO2 + z H2O}$ Here are my equations: Carbon: y=n+m Hydrogen: 2n+2+2n-2=2z z=2n Oxygen: 2x=2y+z Since I found ...
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0answers
29 views

Does silicon have catenation property?

We know that there are countless organic compounds of carbon chain because of carbon's catenation. Silicon also is in the same group of carbon. Does it also have the catenation property? If not, why?
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58 views

What is the correct hybridisation of carbon in ethane?

I am confused by the hybridisation in ethane. I learned it as sp3, but a comment on chemistry.SE says it is inaccurate: Indeed, the model of sp3d2 is inaccurate, but the current model which ...
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1answer
57 views

Why can't terminal alkynes take part in Birch reduction?

According to my book terminal alkynes are not observed in Birch reduction.Why is this so? The only property I know about them is that they are slightly acidic. Does this have something to do with it? ...
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22 views

Why can't a quaternary carbon product be obtained by alkane isomerization in presence of AlCl3 and HCl?

This question actually deals with the reaction in another question: Isomerisation of alkanes under Lewis acidic conditions. I have a further doubt, regarding this reaction my book says that a ...
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1answer
851 views

What is the correct name of 3-isopropyl-4-methylhexane?

In the branched alkane shown above, I've been told that 3-isopropyl-4-methylhexane is supposedly the correct name. However, in the alternative numbering scheme on the right, the parent chain is still ...
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1answer
111 views

What is the mechanism of alkane combustion?

I understand that combustion of hydrocarbons (such as alkanes) produces energy by breaking bonds: $$\ce{C_nH_{2n} + $\frac{3n}{2}$ O2 -> nCO2 + n H2O}$$ And I can find dozens of explanations of ...
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3answers
97 views

Relative strengths of methyl, primary, secondary, and tertiary C–H bonds

Which of the highlighted C–H bonds in the following compounds is weakest? (R = generic alkyl group) I personally thought that the answer was 1 but it is given as 4 in the answer key. I didn't ...
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1answer
171 views

Rearrangement with sodium iodide (ring opening)

I'm not able to figure out the mechanism for this reaction. I don't see how sodium iodide in acetone could lead to rearrangement, and surprisingly ring opening! What is this reaction called, if it ...
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1answer
35 views

Mechanism for formation of Quinol from a Phenolic Ether

What's the mechanism for formation of Quinol from the given phenolic substrate? The reaction seems to be an acid catalysed hydrolysis, but I'm not able to reach the final product. I guess the first ...
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0answers
20 views

Napthalene - Friedel Crafts Alkylation and Acylation [duplicate]

Where does Friedel Crafts Alkylation and Acylation occur in Napthalene? Are the reactions kinetic-thermodynamic controlled? Here's something I came across - While alkylation occurs at alpha ...
2
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0answers
15 views

Fluorination of Carbonyl Compounds using Molybdenum Hexafluoride

What is the mechanism of halogenation of carbonyl compounds using molybdenum hexafluoride? How does it work? Here's a reaction I came across - Can we use it for all carbonyl compounds, or, are there ...
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0answers
35 views

Why is bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Sebacate used as a “bottom coat” for a superhydrophobic coating?

According to this MSDS sheet, a compound named bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Sebacate is used in the "bottom coat" layer before a "top coat" of superhydrophobic NeverWet coating is applied. ...
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1answer
340 views

What is the difference between hydrogenation in presence of platinum and nickel catalyst?

This question is about the hydrogenation of an epoxide into an alcohol. I got option C as an answer, but the answer is option D as well. I have never seen the difference in reduction by change of ...
4
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1answer
52 views

Does hydration show kharasch effect?

In the conversion of propene to 1-propanol, can we just use water in presence of peroxide instead of first converting it into 1-bromopropane and then reacting with $\ce{NaOH}$?
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1answer
117 views

What are the different types of catalysts used in catalytic hydrogenation of alkynes?

This is a question from Org. Chem. by Solomons, Fryhle & Snyder, adapted for JEE by M.S. Chouhan : In the first step, I expected that the reaction would stop at alkene formation via syn ...
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1answer
51 views

What is the softening temperature of styrofoam?

Does anybody know the softening temperature of styrofoam (expanded polystyrene)? By styrofoam I mean the solid made of expanded polystyrene balls used in packaging.
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109 views

Reaction of cyclopropane with hot potassium permanganate

Hot potassium permanganate is usually used as an oxidising agent, and cyclopropane being an unstable three membered ring undergoes reaction with several reagents such as bromine, $\ce{HBr}$, metal ...
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2answers
176 views

Rate of catalytic hydrogenation of alkenes

What does the rate of catalytic hydrogenation of alkenes depend upon? What'd be the increasing order of rate towards catalytic hydrogenation of the following alkenes, A (2-methylpropene), B (cis-but-2-...
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4answers
163 views

Is rearrangement possible in cyclic bromonium ion?

I wonder what the product of the above reaction is, that is, bromination of the given alkene in non polar solvent carbon tetrachloride (proceeds through cyclic bromonium ion intermediate). Once the ...
4
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0answers
88 views

Reaction of alpha hydroxyketone with KOH

What happens when 2-hydroxycyclohexan-1-one (an alpha hydroxyketone) reacts with aqueous $\ce{KOH}$? I tried something like Favorskii rearrangement, but it's wrong because OH isn't a good enough ...
8
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1answer
110 views

Does chlorine trifluoride react with candlewax?

I've run across references to chlorine trifluoride quite a lot. It pops up fairly regularly on the Worldbuilding SE, and whatever idea people have with it is usually shot down very quickly - For ...
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2answers
249 views

Nomenclature for two cyclohexane rings linked by a single bond

From my current basic organic chemistry knowledge, I suppose it is 1,1-dimethylcyclohexane-4-methylhexane. I considered one of the hexane ring as parent chain. But I'm looking for the correct answer ...
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1answer
30 views

Choosing Parent Chain, Complexity of Side Chains

Which parent chain should we choose for this structure? is it A or B? I followed the rule A-2.6, but it still got me confused. Both alternative A and B has the same number of side chains (2 side ...
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1answer
56 views

Is Cracking of Every HydroCarbon Family possible? (Alkane ,Alkenes,Arenes)

I know Cracking is usually used to crack alkanes to get smaller hydrocarbons (as they are easier to ignite) and alkenes(as they have more industrial uses)...but can we crack arenes and alkenes as they ...
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1answer
301 views

Which alkene on heating with alkaline KMnO4 solution gives acetone and CO2?

Which alkene on heating with alkaline $\ce{KMnO4}$ solution gives acetone and a gas that turns lime water milky ? 2-methyl-2-butene isobutylene 1-butene 2-butene I know that $\ce{...
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2answers
257 views

Determine minimum C-H bond length in ethane derivatives

Which of the following compound has minimum C-H bond length? ethane ethene 1,2-dibromoethene 1,2-dibromoethane How can we know the comparison of $\ce{C-H}$ bond length (not $\ce{C-C}$...
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2answers
89 views

Out of the given reagents, find the ones to be used to convert benzene to p-aminophenol

$\ce{Br2/FeBr3}$ $\ce{CH3Cl/AlCl3}$ $\ce{KMnO4}$ $\ce{HNO3/H2SO4}$ $\ce{NBS}$/hv $\ce{NaOH}$ $\ce{Sn/HCl}$ $\ce{NH4SH}$ $\ce{NaBH4}$ I'm able to get the amino group onto the ring by using 4 and 7. ...
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0answers
16 views

Rate of hydrogenation for alkenes [duplicate]

Which of the two alkene will react fastest with $\ce{H2}$ under catalytic condition? I know that rate is inversely proportional to the stability of alkene but here which will be more stable. ...
4
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1answer
47 views

Does presence of alkyl groups on alpha carbon increase yield of alkane in Kolbe's Decarboxylation?

We know that, during the synthesis of alkanes by Kolbe's Decarboxylation reaction, the reaction proceeds via a free radical $\ce{R.}$ at the anode. So, an alkyl group, say methyl, when substituted at ...
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1answer
54 views

Effect of halogen atom on Markovnikov's rule

I know that the Markovnikov's rule is because of the stability of carbocations. If a halogen atom (electron-withdrawing group) is directly attached to the carbon atom carrying a positive charge, would ...
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1answer
94 views

On the addition of HCl to a conjugated diene [closed]

Is this allylic chloride formed by an ionic or radical mechanism? Is it the more stable isomer?
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1answer
329 views

Reaction of dihalides with excess of NaNH2

Gem-dihalides react with $\ce{NaNH2}$ to give terminal alkynes. Why is a terminal alkyne prefered? For example, I had thought that 2-pentyne would be preferred over 1-pentyne as it would be more ...
6
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1answer
127 views

Hydroboration oxidation reaction on trans,trans,trans-1,5,9-cyclododecatriene with carbon monoxide

The given solution: I got this question in an entrance exam coaching test paper in India. Product P is easily covered by the mechanism of simple hydroboration-oxidation reaction, and I've understood ...
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0answers
75 views

Hydroboration oxidation reaction on trans,trans,trans-1,5,9-cyclododecatriene [duplicate]

The given solution: Could some one please explain the mechanism of the reaction? How it proceeds and why it proceeds that particular way? Also, what is the use of $\ce{CO}$?
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1answer
86 views

Is the hydrogenation of carbon dioxide to methane a solution or a problem?

The hydrogenation of $\ce{CO2}$ to $\ce{CH4}$ is thermodynamically a favored reaction at ambient to moderately high temperatures. $$\ce{CO2 + 4H2 <=> CH4 + 2H2O (g)}\qquad G^\circ_{\pu{298K}...
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1answer
846 views

Will vegetable oil and kerosene mix?

Is it possible to mix vegetable oil with kerosene? If not, what other solvents can be used to reduce the viscosity of cooking oil/vegetable oil.
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63 views

Reaction of pentadiene with HBr

$\ce{H2C=CH-CH=CH-CH3}$ reacts with $\ce{HBr}$ at low temperature. What would be the product? At low temperature, product would be kinetic and less stable, while the carbocation intermediate would ...
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2answers
932 views

Why is 2-ethylpentane is not a valid IUPAC name, but 3-ethylpentane is? [closed]

I'm currently writing all the names of alkanes having molecular formula $\ce{C7H16}$. I wish to ask why 2-ethylpentane is not a valid IUPAC name, but 3-ethylpentane is?
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0answers
34 views

2-aminoalkanes undergo haloform test (presumably iodoform test)?

I happened to find a list which showed all those compounds that gave iodoform test.It stated 2-amino alkanes to which I was surprised as it had no ketomethyl or methyl carbinol group,but still gave ...
3
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1answer
123 views

What is the empirical formula for kerosene?

Kerosene is a blend of hydrocarbons, so it doesn't have one chemical formula. But I'd like to find an (approximate) empirical formula giving the ratios carbon and hydrogen. I haven't found anything ...