All Questions
Tagged with everyday-chemistry organic-chemistry
187 questions
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Does sulfuric acid in snow damage fabric?
Had to do an emergency work in deep snow, in results my black cotton clothes were soaked in it. To my basic knowledge “regular” snow may contain not only salts but also sulfuric acid.
Will snow-...
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-2
votes
0
answers
41
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Does Oleyl Alcohol stain or discolor?
Will Oleyl Alcohol stain or discolor surfaces, just like short chains Ethanol or Isopropyl do?
There are many body or hair products containing Oleyl Alcohol (not volatile as ethanol is) which may rub ...
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4
votes
0
answers
58
views
What were the crystals I saw in a package of caffeinated mints?
I opened a package of caffeinated mints this morning, and I noticed that they seemed to sparkle in the light. When I examined it closely, I saw that the "empty space" in the package was full ...
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0
votes
0
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66
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Why does bread soften when wet?
Why does bread structure weaken when wet (or cake, biscuit, corn puff, etc)?
This is really simple question, but I couldn't find answer myself for weeks.
First theory was that adding water dilutes ...
- 237
0
votes
1
answer
112
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Impact of ethanol vapors on surroundings
There’s a popular opinion that ethyl alcohol, when spot-applied to some fabrics or leather, may discolor or damage them.
But what about its vapors? Are these damaging as well?
On occasion, 70% ethanol ...
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2
votes
1
answer
57
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Amination of 2,4 dichloroquinazoline - role of dioxane as solvent and required temperature
In the compound of 2,4 dichloroquinazoline; if an amination reaction is done on 2,4 poitions, why is dioxane used as solvent? Why this solvent in particular (what are its properties, effect , and the ...
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2
votes
1
answer
146
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Why is the Molar mass of CO2 different than the weight of the sum of its particles?
The Molar mass of CO2 is stated to be 44.009 grams per mol
But in a calculation of the weight of each atom's particles((Electrons,Protons,Neutrons) times Avogadro's constant
I get 44.36 grams per mol
...
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1
vote
1
answer
58
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Why does pectin/agar jelly taste sweet, if they stay solid at 36.5 °C, entrapping sugar?
When we eat pectin jelly(fruit jelly) or agar jelly, they taste sweet.
This should imply that sugar entrapped in gel network is somehow exposed and dissolved to saliva.
However, pectin and agar gel ...
- 237
3
votes
6
answers
434
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Removing carbon matter from molten beeswax
In my candle manufacturing process, I melt down used candle stubs, filter the molten wax (heated to ~ $\pu{75^\circ C}$) and use this to create new candles (in addition to fresh beeswax). I'm ...
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-2
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1
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291
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Integration of Artificial Intelligence in Chemistry [closed]
How is Artificial Intelligence impacting the design and discovery of new compounds and medications?
Given the rapid advancements in artificial intelligence and machine learning methodologies over the ...
user137106
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1
answer
113
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Creating Chloramines
I'm currently conducting some testing related to indoor pool environments.
Here I believe, airborne chloramines are responsible for stress corrosion cracking in austenitic stainless steels.
...
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-2
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3
answers
408
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Which part of a soap molecule is the hydrophilic part? [closed]
Is the hydrophilic part of the soap both the cation ($\ce{Na+/K+}$), just the $\ce{COO-}$, or both of those sections together like the picture shown below? Do the cation and the anion dissociate from ...
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0
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0
answers
124
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For radical polymerization reactions, azobis(isobutyronitrile) (AIBN) can also be used as a radical initiator
Draw the mechanism of radical formation if you know that N2 is formed as a by-product.
The solution they give us is
I know what radical polymerization is. The free electron of a molecule binds with ...
- 423
3
votes
0
answers
103
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Ethylene Glycol in Wall Primer [closed]
No scientific background here!
Due to a chemical sensitivity, and general concern for healthier indoor air quality in a home I am renovating, I opted to choose "greener" alternatives in ...
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-1
votes
1
answer
520
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Can limescale actually "etch" glass? [closed]
There are lots of articles on the internet about limescale "etching" glass due to the porous nature of glass. However, as I understand it, limescale is just calcium carbonate so can it ...
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0
votes
1
answer
454
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Chemistry behind adding methyl salicylate to iodine dissolved in petroleum jelly [closed]
We did a project at my school where we were asked to create a pain-relieving balm, inspired by Iodex. We first took 50gms of petroleum jelly and heated it in a water bath until it melted and became a ...
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4
votes
1
answer
53k
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Does rubbing alcohol + bleach really produce chloroform?
A lot of sources on the internet claim that mixing rubbing alcohol with chlorinated bleach produces chloroform.
Rubbing alcohol is isopropanol, and bleach is sodium hypochlorite. Neither of these look ...
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0
votes
0
answers
533
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If they both form hydrogen bonds, Why does borax make polyvinyl alcohol slimy/elastic but water doesn't?
When dissolved borax (borate ions) and polyvinyl alcohol are mixed, an elastic slime is formed. To my understanding, this is because the borate ions form hydrogen bonds with the OH groups on the PVA, ...
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0
votes
0
answers
382
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Table of viscosity of water vs temperature
Above is the table for water physical properties table with temperature related with a,v,b,Pr,Ra factor. This table has temperature only from 0 to 100. May I ask if there is a full table for this with ...
-4
votes
1
answer
580
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How does protein denaturation speed change with temperature? [closed]
So this is something that I had been wondering since middle school. We "roughly" know that protein denaturation occurs above a temperature of 72 degrees Celsius, and is the reason why it is ...
2
votes
0
answers
1k
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What is the resulting solution after leaching hardwood ash with water?
After doing online research, I've noticed there are differing interpretations on what happens when ash is mixed with water, so I've come here seeking clarification on what indeed happens, and also ...
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7
votes
1
answer
1k
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Fluorine detection in organic compounds
Many of you will know why I am asking this question. There is a lot of attention recently to the dangers of the so called Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS). In essence organic ...
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1
vote
0
answers
91
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Hazards of eating non-stick coating, particularly considering the coating primer [closed]
How unhealthy are teflon / non-stick coating chips that end up eaten? What role does the primer coating play?
Existing similar threads that don't go into enough detail: 1, 2
I understand that there is ...
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votes
1
answer
107
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How Bread is made with yeast, sugar and luke warm milk? [closed]
Materials and Apparatus:
wheat flour
sugar
dry yeast
glass bowl
covering plate
milk
Procedure:
Lukewarm milk is taken in the glass bowl and sugar is added to it. Then, yeast is added to the same.
...
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2
votes
0
answers
31
views
What are the common procedures for viewing suspensions of volatile organic compounds under an optical microscope?
I am looking to measure a mixture of triethylamine and water in a micro-Raman instrument. This involves placing the sample under an optical microscope. The "default" sample preparation is to ...
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3
votes
0
answers
69
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Can color-changing leuco dyes be used to indicate when a certain molecule binds to another in a textile fabric?
Thermochromic leuco dyes change color when the temperature changes. I want to use leuco dyes to make a color-changing fabric. However, instead of using temperature to induce color changes, I want the ...
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2
votes
0
answers
31
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About the acidity of Sultiame [closed]
Why is sulthiam base even hough sulfur can accept the electron by resonance from nitrogen
like carbonyl group do?
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0
votes
0
answers
377
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About the acidity of phenytoin
Can you explain why phenitoin is weak acid even though nitrogen is base?
Does carbonyl group always make structure acid?
If this structure doesn't have carbonyl group, would it be base not acid?
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-3
votes
1
answer
287
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Turning oil into solid for candles [closed]
I added stearic acid to hot vegetable oil and saw it turned to a sludgy, slush material in about 1.5 hours. Is there any other natural additive that I can add to make it more solid in the same amount ...
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2
votes
1
answer
70
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Diffusion of multiple gases at once
Graham’s law of diffusion states the rate of diffusion between two gases is inversely proportional to their molar masses. Now, this is helpful when we are focused on two gases. But that is rarely the ...
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2
votes
0
answers
109
views
Glycerin yield upon saponification of beeswax
I am making a custom grease (castor oil & sodium stearate) that will be suspended in beeswax. I have found that saponifying some beeswax for use in the grease results in higher operating ...
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3
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0
answers
37
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Adsorbable Organic Halides (AOXs) in bleach residue
I have a question regarding using household bleach, and wonder if someone knowledgeable can help, please?
I have used household bleach (sodium hypochlorite, sodium hydroxide, coco alkyldimethyl, ...
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0
votes
0
answers
108
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Betaine HCl solution at neutral pH
I was trying to make a $2\text{M}$ solution at $\text{pH}\, 7.5$ of Betaine $\ce {HCl}$.
I started by weighing out the appropriate amount of Betaine $\ce {HCl}$, added some water and started stirring. ...
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1
vote
0
answers
549
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Calcium chloride as a drying agent for solutions
I'm aware of the reaction Calcium chloride has with water vapour and how it can therefore be used as a good and inexpensive drying agent but could that be applicable for solutions?
For example if ...
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-1
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1
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2k
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Why is isopropyl alcohol (isopropanol) used in rubbing alcohol instead of 'regular' propanol?
Is isopropanol (or 2-propanol) a better solvent than ordinary propanol (or n-propanol, or 1-propanol)? This is strongly implied from what I have read, but I can't seem to find a place that distinctly ...
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2
votes
2
answers
2k
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CO2 Catalytic Converter
We all know how CO2, as a greenhouse gas affects the climate and causes global warming. I was thinking of a small device, which could be attached to the exhaust pipe of an automobile. It could convert ...
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-2
votes
2
answers
626
views
What is the essence of chemistry? [closed]
I am an engineering student who loves physics but didn't quite enjoy chemistry.
a. When I was in high school chemistry to me was something not as inspiring as physics but in which I couldn't solve ...
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2
votes
1
answer
278
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Detecting impurities in polyethylene glycol 3350
I would like to test samples of polyethylene glycol 3350 ($\ce{H−(O−CH2−CH2)_n−OH}$ with an average molecular weight of 3350, so n is around 75) to determine if there are any impurities and if so the ...
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1
answer
1k
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How do i get acetic acid from vinegar?
I'm trying to improve my rocket project, but, since the competition only allows the use of vinegar and sodium bicarbonate as its fuel, I had an idea of using the vinegar in a different way. My plan ...
1
vote
1
answer
252
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What is the chemical formula(s) for liquid potassium-based soap? [closed]
Many places say that liquid soap is generally potassium-based, while the solid stuff is sodium-based.
But, while I have found several sites saying that solid soap is usually sodium stearate, I can't ...
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-1
votes
1
answer
842
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Acids and Bases (Spectator Ions Identification)
In an acid reaction with water, or other solvents, how do we know which atom(s) from a compound reacted with that solvent are the spectator ions? Are they the ones soluble in the solvent?
Is the way ...
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7
votes
2
answers
2k
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Why does ethylamine have two infra-red spectra? Are both correct?
The one I have in my textbook is this:
Shouldn't the first trough at $3500$ to around $3000$ mean that it's an $\ce{O—H}$ group with a $\ce{C—H}$? And then the other trough at $1700$ be a $\ce{C=O}$? ...
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1
vote
3
answers
3k
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How to neutralize the stink of decomposed fish?
Recently I discovered for myself an interesting way to easily produce home made plant fertilizer that is quite effective (tested myself on the plants). It's fish emulsion (so can be used also in a ...
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5
votes
0
answers
125
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How much oxygen is used up by the browning of an apple?
This is inspired by a recent popular question on Cooking.
Let's assume that I take some apples, cut them up, and place them in a hermetically sealed container. Then the container goes into the fridge. ...
- 478
0
votes
1
answer
284
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Creating 100mg/L aspirin solution
I plan on creating 100 mL of 100mg/L aspirin solution by dissolving 10 mg of pure aspirin powder in 100 mL of buffer solution (of different pHs). Problematically, aspirin doesn’t tend towards ...
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4
votes
1
answer
597
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Biodegrability of straight chain and branched chain detergents
From NCERT Chemistry: Textbook for class XII, Part II [1, p. 461]:
Main problem that appears in the use of detergents is that if their hydrocarbon chain is highly branched, then bacteria cannot ...
- 594
2
votes
1
answer
241
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Home made PCB tinning solution [closed]
By reviewing a couple of articles and videos I decided to give some try to develop a PCB tinning solution at home. Based on most of the articles, the easiest way to develop this solution is by using ...
4
votes
2
answers
8k
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Isopropyl Alcohol Vs Acetone for Dissolving Organic Contaminants on PCB
Acetone is widely used in labs as a solvent to clean vials and tubes as it is a good solvent for organic materials. Isopropyl alcohol is used as a rubbing alcohol for cleaning contaminants on the body ...
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2
votes
1
answer
300
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Why And How are Unbranched chains of hydrocarbons easily biodegraded?
My chemistry textbook says
If detergents are highly branched then they can't be easily degraded by bacteria.So,nowadays the branching of hydrocarbon chain is controlled and kept to a minimum.
Upon ...
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-2
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1
answer
92
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Why is it that when I add yolk to vinegar and olive oil, it doesn't create a stratification?
Why is it that when I add yolk (which mostly consists of minerals, vitamins, lipids and proteins) to vinegar and olive oil, it doesn't create a stratification?
I'm really confused about this because ...
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