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The detailed (and as complete as possible) description of plausible or observable pathways leading from reactants to products of a chemical process. This tag should be applied to questions about these processes. It may be applied to hypothetical and/or proposed mechanisms.

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Endothermic Reaction between Ammonium Chloride and Water

Why is the reaction between Ammonium Chloride and water endothermic and what exactly is the reaction? I already know that Ammonium Chloride dissociates in water as water is a polar molecule, but does ...
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0answers
12 views

Ammonia Scrubbers [on hold]

What would be a good ammonia scrubber at room temp and is also a dry compound? I looked around and saw Aluminum Oxide would work but it has to be fairly hot to do it.
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1answer
48 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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0answers
23 views

How does Boudouard reaction influence the temperature?

I've a question that is giving me a lot of troubles: I'm depositing and gasifying Carbon by varying a flow rate of $\ce{CO}$ and $\ce{CO2}$ and by using the Boudouard reaction ($\ce{2CO -> C + CO}$)...
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In the Sn2 reaction given by cis-3-methylcyclo pentyl bromide with alkali, the product formed is? [on hold]

If we react an alkali with cis-3-methylcyclo pentyl bromide, then surely we will get an alcohol product. According to me, the alkali should replace the bromine with an OH group. But I am not sure, ...
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39 views

Do Sodium Alkynides react with esters in the same way that Grignard reagents do?

We know that Sodium alkynides react with aldehydes and ketones like Grignard reagents. But do they behave the same way with esters?
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1answer
13 views

How will an equilibrium reaction be impacted if the temperature is decreased? [on hold]

From here I got to know what would happen if temperature is increased. But what would happen to the equilibrium reaction if the temperature is decreased?
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28 views

Reaction mechanism of Friedel-Crafts alkylation [on hold]

Please verify or correct my reaction mechanism of the my synthesis below. Thank you.
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37 views

Stability of inorganic geminal diols [closed]

In the these reaction mechanisms,I am not able to understand why we are able to obtain a geminal diol as the final product in the case of hydrolysis of $\ce{SiCl4}$ , but we had to take $\ce{S=O}$ and ...
2
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1answer
44 views

Organic chemistry. how to control the Friedel–Crafts alkylation rection to methylbenzene as the major product?

My question is due to a discrepancy I founnd in reactivity and organic conversions. In reactivity of organic compounds it has been established that an alkyl group activates the benzene ring and hence ...
1
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1answer
55 views

The reaction of iron with sulfur to produce Iron(II) sulfide is inconvenient (for me)

I am taking a lot of iron properties this semester, but I have found some contradicting piece of information about the reaction of iron with nonmetals illustrated with two cases \begin{align}\ce{ **...
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0answers
32 views

HOCl + ethyne reaction-hypochlorous acid with acetylene

What is the product of acetylene ($\ce{C2H2}$) and hypochlorous acid ($\ce{HOCl}$) reaction? I gathered that $\ce{Cl}$ acts as electrophile and so $\ce{HOCH=CHCl}$ is formed. Now two things can ...
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2answers
24 views

Fischer-Speier Esterification: Sulfuric acid removal following creation of ester

I'm a beginning chemistry student, and I was wondering what the best way of removing sulfuric acid was following the creation of benzyl acetate. So far, I have that benzyl alcohol and glacial acetic ...
2
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1answer
57 views

What side reactions are suppressed by the use of TMSCl in the acyloin condensation?

I was reading about the acyloin condensation and came across a statemant according to which, the use of TMSCl obviates competing reactions. My question is what kind of competing reaction would happen ...
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0answers
14 views

Palm Oil Fatty acid Distillate- Animal Feed of Calcium Enriched Fatty Acids [closed]

Can Palm oil Fatty acid distillate (PFAD) when mixed with calcium oxide and water generate charged particles ?
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1answer
27 views

Mix quaternary ammonium compounds with washing powder [closed]

So to get rid of bad smells from clothes that have stayed wet for long, I am wondering if I can just add a disinfecting product to my wash in addition to regular washing powder. I have a product ...
2
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0answers
29 views

Production of oxirane mechanism

Regarding oxirane production developed by Wurtz, is there an accepted mechanism? I carried out a research but couldn't find anything. My approach was this Is that correct?
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1answer
30 views

Which of the following is most likely to undergo hydride shift?

For the following question the answer is given as option (a) . However both,option (a) and (c) has alpha H atoms and both will form 3° carbocations after rearrangement. So what makes (a) more ...
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1answer
145 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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0answers
28 views

Feasibility of Pyrolytic Rearrangement [closed]

I've been asked whether or not the above reaction happens - and if it does, what's the mechanism? I'm really confused, I think it shouldn't happen; but I'd like to confirm with Chem SE, just to be ...
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0answers
9 views

enzyme reaction model involving modifier

An enzyme $E$ can bind at single site with a substrate $S$ for form a complex $C_s$ and hence a product P. The enzyme can also bind with a modifier $M$ at either two binding sites forming complexes $...
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0answers
33 views

Reaction of 2-bromo-1-fluoro-4-nitrobenzene with NaSCH3 [duplicate]

We have to determine what happens when 2-bromo-1-fluoro-4-nitrobenzene is reacted with $\ce{NaSCH3}$? I thought $\ce{SCH3-}$- would add to the bond just above $\ce{NO2}$ group because hindrance is ...
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2answers
44 views

Equilibrium for very small amounts of reactants

Is there any difference in the concept of equilibrium when it comes down to dealing with extremely small amounts of reactants? Say we have $$\ce{A + B <=> C + D}$$ and $K_c$ is $100,000$. If ...
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2answers
55 views

How does the equilibrium shift when concentration of reactant and product are increased simulatenously

Before answering my question, take a look at this example $$\ce{2NOCl <=> 2NO + Cl2}$$ Let's suppose I have 2 mol/l $\ce{NOCl}$, 2 mol/l $\ce{NO}$, and 1 mol/l $\ce{Cl2}$ in a closed system. ...
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1answer
107 views

What could possibly cause a “melting” reaction between vinyl and plastic?

This question was posted in Electronics. Something is really odd about it! What could possibly be causing this "melting" reaction between a common flexible covering (vinyl, apparently) on test lead ...
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1answer
39 views

Predicting products of a reaction and balancing [closed]

2BiOCl + NaOH = BiOH + NaCl. This is the reaction where I am trying to get Bismuth Hydroxide as one product and salt. My problem is what is the state of Bismuth Hydroxide? Whether it is BiOH or Bi (OH)...
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1answer
82 views

Mechanism for conversion of imide to ester with NaH

What is the mechanism of this reaction? My proposed mechanism is shown below, would it work?
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59 views

Reaction of nitrogen trichloride with water

How can I predict the products formed when nitrogen trichloride $\ce{(NCl3)}$ is added to water? I know that chlorine reacts with water to form hypochlorous acid through a hydrolysis reaction. $\ce{...
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0answers
64 views

Why does formic acid give positive Fehling's test?

$$\ce{HCOOH ->[\text{Fehling's solution}] CO2 + H2O}$$ The points discussed in a previous question do not account for the fact that formic acid also gives positive Fehling's test since it is not ...
5
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1answer
88 views

Reaction of chloroform, resorcinol and strong base

A common reaction used to identify resorcinol (benzene-1,3-diol) in the laboratory is to react it with chloroform in presence of 30% sodium hydroxide (NaOH). A red coloured solution (or precipitate) ...
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1answer
63 views

Wurtz Reaction with acidic alkyl halides [closed]

My chemistry book says we cannot use alkyl halides containing acidic hydrogen for Wurtz reaction. Why is this so?
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1answer
722 views

Chemical equation that can be balanced in infinite number of ways?

When I was studying for my chemistry test, I found an equation that illustrates how to get water gas (carbon monoxide + hydrogen) out of methane. It is stated like this: $$\begin{align}\ce{2CH4 + CO2 +...
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1answer
59 views

Regioselectivity of bromination of alkenes

Recently, in my chemistry lesson, we were discussing the mechanism of the bromination of alkenes. The teacher brought up the involvement of the cyclic bromonium intermediate. She also mentioned that ...
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33 views

Reaction of 1,3 Butadiene with HBr in the presence of peroxides

I have learnt that the reaction of 1,3 Butadiene with HBr depends on the temperature as the temperature determines whether the reaction is under kinectic control or thermodynamic control. I believe ...
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34 views

Reaction of hydoiodic acid with epoxide derivatives in ring opening

I have read from Morrison and Boyd (7th edition; Chapter 16; section 16.16- 16.19) that in acid catalyzed ring opening of epoxides, the nucleophile attacks at the position where the carbocationic ...
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1answer
30 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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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 ...
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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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1answer
45 views

Salt used in Perkin Reaction

The Perkin reaction gives an α,β-unsaturated aromatic acid by the aldol condensation of an aromatic aldehyde and an acid anhydride, in the presence of an alkali salt of the acid. Here is an a diagram ...
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Why add NaBH4 slowly to 4-t-butylcyclohexanone in ether solution? [Lab Procedure]

$\ce{NaBH4}$ is to be added slowly to 4-t-butylcyclcohexanone in ether solution according to laboratory procedures, but I am curious as to why that is? 4-t-butylcyclohexanone undergoes reduction with $...
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41 views

Mechanism of photochemical hydroamination with LDA

I've recently come across a couple examples of intramolecular alkene hydroamination accomplished by treatment with LDA followed by visible light irradiation (tungsten light bulb):[1,2] I'd assume ...
5
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1answer
63 views

How is laughing gas produced in the Nef reaction?

I can't think of a mechanism for this reaction to give laughing gas. Attempt: I used the base to take out the acidic hydrogen at alpha position with respect to nitro group, but that makes the ...
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0answers
27 views

Order of a complex reaction [duplicate]

Is the order of a complex reaction determined by the slowest step always? Is it so that order of a reaction is determined by rate determining step and since in a complex mechanism, we write elementary ...
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3answers
91 views

In regard to collision theory, why do molecules have to have the correct orientation in order to react?

Hypothetically speaking, if a reagent in a bimolecular reaction has enough energy to break the bond of the other reagent but is orientated in the wrong direction, why does the bond not break? Does the ...
5
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2answers
89 views

Major product in Reimer-Tiemann Carbonylation

Attempt: This is Reimer-Tiemann Carbonylation reaction in which the ortho product is major when phenol is the substrate. Hence, here I expected the ortho product to be major as well as it would also ...
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2answers
100 views

Acetaldehyde with few drops of concentrated sulphuric acid

Acetaldehyde on treatment with a few drops of concentrated $\ce{H2SO4}$ gives? Attempt: First, I formed an enol intermediate in acidic medium $\ce{CH2=CHOH}$. Then, I performed electrophilic ...
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1answer
109 views

Haloform Reaction of Furfural

My instructor pointed out that furfural undergoes haloform reaction - I don't understand how. I couldn't figure out the mechanism on my own, and couldn't find much online either. (regarding the ...
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What happen if i keep etched silicon underwater?

I am trying to remove oxide of silicon by using etching solution. After etching, usually silicon turn shiny. But just out of curiosity i let it soak in water overnight, the surface of silicon is a bit ...
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1answer
87 views

Which chemical reactions don't involve bond breaking?

I recently came across a question in which an option is 'Breaking a chemical bond is the first step in any chemical reaction', which lead me to think of reactions which do not involve bond breaking. ...
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39 views

What coefficients can I use in a Reaction-Diffusion Equation?

I am qualitatively analyzing an abstract chemical reaction $A + B \rightarrow 2A$ where $A$ and $B$ are some liquid substances that undergo Reaction-Diffusion with a second order reaction (actually ...