Questions tagged [hydrocarbons]

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] or other relevant tags instead.

Filter by
Sorted by
Tagged with
-2
votes
0answers
10 views

Compare reactivity of these compunds towards nitration [closed]

Among these which has the highest reactivity to electrophilic nitration reaction:- a) Toluene, b) Nitrobenzene, c) Benzoic Acid, d) Benzene. And, if possible, shortly explain why.
1
vote
3answers
49 views

Are there other carbon free gasses that can be used for energy transport, apart from hydrogen?

Various gasses are currently used to transport and store energy for heating and electricity generation. Most of them contain carbon: Methane, propane, butane, carbon monoxide and natural gas. It ...
-1
votes
0answers
13 views

I wanted to know how the β-elimination for a 3° alkyl halide will take place [closed]

I've heard that the rate of the reaction is determined by the alkyl group present and goes in order of decreasing rate like this:3°>2°>1° but I was just wondering how the actual reaction takes place ...
-2
votes
0answers
26 views

Could a chemical as “clean” as hydrogen peroxide be created with a higher energy to mass ratio? [closed]

By "clean" I mean in terms of the waste products it produces, i.e. water. This is in reference in particular to greenhouse gases. I was trying to find out why, in view of Climate Change, people aren'...
1
vote
0answers
43 views

Is there a cheap and effective way to make PdZn-Ag foam?

I am trying to design a machine that can convert carbon dioxide into methanol and/or hydrocarbons. My design requires PdZn-Ag foam (nanoparticles), which is made by depositing palladium-zinc vapor ...
0
votes
1answer
41 views

Is there any chemical that can catalyze “reverse combustion?” [closed]

I am trying to build a machine that converts carbon dioxide and water into gasoline (i.e. octane). Because the energy needs are so large, is there any catalyst chemical that can cause "reverse ...
0
votes
0answers
23 views

Definition of a Homologous Series

My textbook states that members of a homologous series have the same general formula (ex. $\ce{C_{n}H_{2n}}$ for alkenes) as they only differ from one to another by additional $\ce{CH_2}$ (methylene) ...
-1
votes
1answer
27 views

Are Phenol and Alchohol both hydrocarbons? [closed]

In many books there are said that Alchohols are hydrocarbons, and some says they are not. On the other hand Phenols are said aromatic hydrocarbons. It is well known that Phenols are not Alchohol. ...
0
votes
0answers
14 views

What is the order of acidity for hydrogens in primary, secondary and tertiary alkanes, alkenes, and cycloalkanes [duplicate]

The bond dissociation energies of C-H bonds in alkanes, alkenes and aromatic compounds decrease in the following order: primary > secondary > tertiary > allylic > benzylic. The weaker the bond, the ...
6
votes
2answers
476 views

Why is the name 'propylene oxide' preferred for epoxypropane?

This is the molecule I know as epoxypropane: In my neck of the woods (example), this molecule is used as one of the standard examples of small chiral molecules. The name 'epoxypropane' makes a heck ...
7
votes
1answer
200 views

What is the most acidic neutral hydrocarbon?

This is a question I've been thinking about quite frequently. I had seen that this hydrocarbon has a low $\mathrm pK_\mathrm a$ with reference to the highlighted H-atom Loss of the central gives ...
0
votes
1answer
37 views

How much CO2 is emitted by burning coal to produce 1 kWh of energy

I'm a little embarrassed to ask this question at this stage of the climate game but, in searching, I seem to get contradictory answers. For example, here: https://www.eia.gov/tools/faqs/faq.php?id=73&...
-3
votes
1answer
39 views

What does a gasoline fuel contain [closed]

I would like to ask you a quetsion about hydrocarbons and gasoline. If you mix a octane with ethanol, what kind of bonds would you gate as in how will the atoms react. Can you in someway explain it ...
0
votes
0answers
30 views

How can a conjugated system of open hydrocarbon chains have delocalization?

If conjugated systems have delocalized electrons, and delocalization takes place when there are two possible structures how come I can only find one for conjugated systems of chained hydrocarbons like ...
-1
votes
1answer
124 views

Can sulfuric acid attack a hydrocarbon/paraffin? Under what conditions? [closed]

Sulfuric acid can attack benzene and other hydrocarbons (when mixed with hydrogen peroxide). Also, chlorine gas and bromine can replace hydrogen(s) in hydrocarbons like methane, ethane, propane,butane ...
0
votes
0answers
101 views

Coupling reaction with reagent Na / Dry Ether

The following question was asked on myPAT website: I started with the solution by assuming Wurtz reaction would take place. And hence, I came with the product shown in option A. I knew that ...
-2
votes
1answer
43 views

More use of pentane(+hexane+..) when compared with methane? [closed]

Methane is one of most cleaner of vehicle fuels when compared with other hydrocarbons. It can be easily and continuously produced in form of biogas in biodigestors working on farm and animal wastes. ...
5
votes
1answer
482 views

Chain with double bond or triple bond

In this hydrocarbon there can be two main chains: one with two double bonds and one with a double and a triple bond Both main chains contain seven carbon atoms. Which will be considered correct and ...
1
vote
1answer
58 views

Why carbon monoxide reacts with hydrogen to give different products in the presence of different catalysts

My books says how carbon monoxide will react with hydrogen to give different products with different catalysts, but how exactly do different catalysts yield different products. Do they provide ...
0
votes
0answers
17 views

Carbon-Carbon Chain stabilities [duplicate]

While learning about Carbon and its Compounds in a class 10 coaching, I suggested a structure for some isomers. It contained a connection of two consecutive carbons connected by double bonds. The ...
1
vote
0answers
25 views

How would you order alkyl groups of this compound numerically? [closed]

If akyl groups are ordered alphabetically and ethyl comes before methyl, would this compound be called 2-ethyl-3,4 dimethyl pentane? Since that would be less than 4-ethyl-2,3 dimethyl pentane, correct?...
6
votes
1answer
148 views

Role of THF in oxymercuration of alkenes

I am trying to self learn solomon's organic chemistry book, but there is no explanation over why we should use THF in oxymercuration. After a quick search I found out that THF help stabilize in ...
1
vote
1answer
215 views

Does benzene react with steam to create an alcohol?

Benzene has a molecular formula of $\ce{C6H6},$ right? Surely it has some alkene-like properties because of the double bonds, so can it undergo a hydration reaction to create alcohol?
0
votes
2answers
85 views

Which reaction is useful to prepare odd number of hydrocarbons?

Which reaction is useful to prepare odd number of hydrocarbons: Wurtz reaction Kolbe electrolysis Corey–House synthesis Oxymercuration Wurtz reaction produces even products except if we take ...
1
vote
2answers
85 views

Rate law of the reaction of propane with oxygen

In class, I have a demonstration where I light a bubble filled with propane. As I add oxygen, the bubbles combust faster and more quickly. I have already balanced out the chemical reaction like so: $$...
1
vote
1answer
89 views

How to remove wash anthracene oil/creostae oil from stainless steel tanker?

I once loaded anthracene oil/creosate Oil in my stainless steel tanker and I had to transport it to some factory. The material was inside the tanker for throughout the journey that was of around 8 ...
1
vote
0answers
51 views

Ozonolysis of 1,2,3,4,5,8‐hexahydronaphthalene

Consider 1,2,3,4,5,8‐hexahydronaphthalene: If one equivalent of ozone is added, then which double bond will undergo ozonolysis? If it attacks the more electron rich one, then unstable 10 membered ...
0
votes
0answers
14 views

Does Hydroboration oxidation always give Anti-Markonikov product? [duplicate]

Consider the case of pent-2-ene, what will happen if we make this compound undergo hydroboration oxidation? I tried this by checking stability of partial positive charge developing on the carbon in ...
9
votes
2answers
686 views

400–430 degrees Celsius heated bath

I want to perform a reaction which needs the temperature to be maintained between 400–430 °C. Since it's the only practical solution, I opted for a heated bath. I'm looking for a hydrocarbon fraction/...
0
votes
2answers
156 views

Why are triple covalent carbon to carbon bonds drawn linearly in skeletal structure? [duplicate]

In the link see that cyclic C-C structure with a triple covalent bond is drawn with an angle, probably the only way to draw it but why is it drawn linearly in non-cyclic and not like single or double ...
1
vote
1answer
808 views

Naming ester as a substituent to carboxylic acid

Can carboxylic acid functional group -COOH and ester's functional group R-COO-R' be in one structure? If yes, carboxylic acid will be the parent chain and ester will be the substituent as c.a. is ...
8
votes
1answer
254 views

Based on their respective number of degrees of freedom, what's the most efficient fuel; hydrogen or gasoline?

The reaction of octane's combustion is: $$\ce{2 C8H18 + 25 O2 -> 18 H2O + 16 CO2}$$ I am asked for computing the number of degrees of freedom of the octane given that its specific heat is $\pu{...
2
votes
0answers
75 views

Resonating structures of (pentan‐2‐ylidene)oxidanium

Draw resonating strictures of the following compound: In this molecule there are two π-components, but they are not conjugated. According to me, as there is no conjugation, it should not have a ...
0
votes
2answers
293 views

Size of hydrocarbons and boiling point

Increasing the contract surface area between hydrocarbons raises boiling point, so hexane should have a higher boiling point than propane. This doesn't really make sense to me. What is the difference ...
0
votes
1answer
143 views

Sulphonation of benzene

Will nitrobenzene and benzene have the same rate towards sulphonation reaction, since the formation of sigma complex is not the RDS of this reaction?
0
votes
1answer
48 views

Does there exist a dye that will primarily bind with water in a water/oil emulsion?

I'm wondering if there exists a type of dye that will bind primarily with water when introduced to a water/oil emulsion. That way if the water is centrifuged to the bottom of the vial, it will be dyed ...
3
votes
1answer
76 views

What are “O-hydrocarbons”? A pharma translator's question (Russian to English, “О-углеводороды”)

A translator colleague is translating from Russian a plan for study of a number of leachable and extractable substances (pharmacology). This Russian text mentions one particular class of chemicals ...
5
votes
1answer
197 views

Which of the two structures is more stable?

Which of the two structures is more stable? As far as I know, alkenes with a greater number of hyperconjugating structures are more stable. Hyperconjugation has a greater stabilizing effect ...
-1
votes
2answers
639 views

Stability of alkadienes

Which of the following is the most stable? (i) Conjugated alkadiene $(\ce{CH2=CH-CH=CH2})$ (ii) Isolated alkadiene $(\ce{CH2=CH-CH2-CH=CH2})$ (iii) Cumulated alkadiene $(\ce{CH2=C=CH2})$ (...
3
votes
0answers
45 views

Relationship between structure and shock sensitivity for branched vs straight hydrocarbons and ammonium ions

In p. 137 of John D. Clark's Ignition! (in the new edition), Clark reports an interesting observation regarding the shock sensitivity of different isomers of alkyls and ammonium salts. Specifically, ...
-2
votes
2answers
2k views

How to convert but-2-ene to but-1-ene? [closed]

How can we convert but-2-ene to but-1-ene? Is it even possible, since but-2-ene is the more stable one.
1
vote
1answer
39 views

3D printing of alumina

I want to print a structure of alumina, and the 3D printer that I am using is an extrusion-based printer. So I need your help in knowing that what composition (binders and deflocculant) of alumina ...
1
vote
2answers
2k views

Why total heat of hydrogenation of 1,3-cyclohexadiene is more than that of benzene?

I'm told that heat of hydrogenation (HOH) is directly proportional to number of π bonds and inversely proportional to stability. So, is the aromaticity responsible for this? Also, what is the general ...
1
vote
1answer
875 views

Which will be the major monochlorination product? [closed]

Which of these compounds represents the major monochlorination isomer formed in the following reaction? According to selectivity theory, the answer should be (c). However, the given answer is (...
15
votes
1answer
669 views

ICHO Synthesis Problem 2018

I've several doubts about this ICHO synthesis problem, which was a part of the preparatory problem package of 2018 (so yes, it's not a part of an ongoing contest) Before sharing the answer given, I'...
0
votes
1answer
207 views

Expanded structure formula and Lewis dot structure, whats the difference?

I am teaching my self the basics of chemistry and I have done lewis dot structure before. Right now I am going into carbon chemistry which often use structure formulas to represent compounds. There is ...
1
vote
1answer
168 views

Hydrogenation of 1-hexene with Raney nickel

For my high school senior chemistry project, I need to create and perform a lab. I've chosen to do the hydrogenation of 1-hexene with the catalyst of Raney nickel. I'm struggling because I'm not ...
1
vote
0answers
80 views

Atomic carbon in rocket exhaust

Inspired by this article, I've been looking at using metallic hydrogen as a rocket fuel using CEARUN. I'm looking at diluting the atomic hydrogen with liquid methane to reduce the chamber temperature ...
0
votes
1answer
142 views

Determination of molecular formula of hydrocarbons by combustion analysis

So, I've this question in my textbook: $\pu{20 mL}$ of unknown gaseous hydrocarbon reacts with excess oxygen gas. It decreases by $\pu{30 mL}$ upon cooling down. It decreases farther $\pu{40 mL}$ ...
0
votes
1answer
39 views

Can hydrides react with hydrocarbons? And why?

I have read there exist so called "magic" (super strong) acids which can provide a proton to saturated hydrocarbons, producing cation and hydrogen molecule. Can hydrides act in the same manner (pick a ...

1 2 3 4 5 6