Questions tagged [everyday-chemistry]

Applications of chemistry to reagents, reactions and processes of everyday life. Use this tag for question on chemistry in an out-of-laboratory/class context. DO NOT use this tag merely because the question is about simple chemistry.

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253 views

Can hydrogen peroxide dissolve rust?

wd-40's "help page" on "How To Loosen Rusty Bolts, Screws And Nuts" states: Hydrogen peroxide can dissolve rust. Applying hydrogen peroxide to the fasteners and letting it sit is ...
0 votes
1 answer
59 views

Getting magnesium chloride gunk off a wood shelf

I have a situation. Some magnesium bath salts got left on a wood shelf in my bathroom in a bag that was not closed. Being hydroscopic, it sucked up a ton of water, and then spilled onto the wood. ...
-2 votes
1 answer
38 views

Hund’s Rule - Please help explain below using Hunds rule? [closed]

Why is it easier to excite a 2s electron in a carbon atom to a 2p orbital than it would be to do the same in nitrogen?
-2 votes
0 answers
41 views

Breaking Bad's 99.1% Methamphetamine Purity [closed]

Is there any chance that we can produce 100% Purity of Methamphetamine?
1 vote
3 answers
138 views

Does smoking drugs degrade them?

Why doesn't smoking a drug degrade or destroy it? A wide variety of psychoactive compounds ("drugs") are commonly consumed via smoking – e.g., nicotine, THC, amphetamines, cocaine, and DMT. ...
1 vote
2 answers
327 views

Bad slaked lime?

I recently purchased some slaked lime online and suspect it is not good (not fully slaked?). When added to water around 35 °C, it heats to about 80 °C. My understanding is that slaked lime should ...
-4 votes
0 answers
21 views

In cellular respiration, is water the product or the reactant? [closed]

Easy, water's the product! NOPE, my chem professor doesn't think so. Am I actually wrong or is a mistake on the exam?
-2 votes
0 answers
23 views

What Chemicals to Reduce, Remove or Substitute to Make My Dry-erase marker ink Clean well after It has Dried

Can someone please help me with the best formula for the production of dry-erase marker ink that can be completely cleaned after a day of writing on the whiteboard? Here's my formulation: 1.Ethanol ...
4 votes
1 answer
3k views

Is the compound CM-7 in Red Comet fire grenades azeotropic dichloromethane?

Red Comet Manufacturing changed the liquid in their fire grenades from carbon tetrachloride to something they referred to as CM-7 in 1955. Is CM-7 the same thing as azeotropic dichloromethane? If not,...
14 votes
4 answers
28k views

Which chemical is responsible for making marker ink permanent?

As asked in the question and also, a bonus question: which property of a chemical would make it 'permanent' in terms of markers?
-1 votes
0 answers
27 views

Thickening agent for oils [closed]

I'm in the process of starting my business and I would like to mix oil for the hair. I use various carriers and essential oils. I would like to know what thickening agent I can use to make the mixture ...
0 votes
3 answers
78 views

Non toxic Chemicals that will react in water?

Long story short, I'm planning an in-home escape room and want to create a puzzle where the guests find a vial containing some sort of chemical that they can dump into a water fountain. My intention ...
-1 votes
2 answers
44 views

How long can dimethyl sulfoxide be safely stored in a HDPE "barrier bottle"?

How long can dimethyl sulfoxide be contained in a HDPE barrier bottle without any reaction between the plastic and the solvent? I have read that DMSO is not reactive with HDPE, but I would like to ...
3 votes
2 answers
373 views

Chemical equation for the reaction of Allura Red AC with NaClO

I am trying to figure out the chemical formula for the reaction between Allura Red AC and $\ce{NaClO}$ (bleach). I have never met such reactions before in my study, and I was unable or maybe looked in ...
20 votes
2 answers
6k views

Vinegar and baking soda: Cleaning agent or neutralized sludge?

I've seen it suggested countless times that combining vinegar and baking soda is a great home cleaning solution, but this always seemed like nonsense to me. I recognize that baking soda, a base, can ...
9 votes
7 answers
5k views

Examples of non-volatile, but flammable liquids?

As far as I know, most flammable liquids are volatile. Are there flammable liquids that are non-volatile?
6 votes
2 answers
4k views

Would an amalgam filling under or next to a gold crown cause any electrochemical reaction?

Would a mercury amalgam filling deteriorate faster if it was in contact with a gold crown?
2 votes
0 answers
44 views

What layer is formed on Titanium when soaked in Hydrogen Peroxide?

A few pieces of TI-6AL -4V ELI ASTM F136 Titanium jewelry were left to soak in a small cup of 3% household Hydrogen Peroxide. After about a week of soaking, all of the Titanium had acquired a smooth, ...
9 votes
1 answer
2k views

Why do purple Pedialyte freezer pops turn green when frozen?

I bought some Pedialyte freezer pops for my kids: And I've noticed that after spending a long enough time in the freezer, the purple "grape" pops change color from purple to green: After ...
4 votes
2 answers
981 views

Maximum possible hypochlorite concentration from electrolysis?

For reference, "electrochlorination" is just the electrolysis of a simple solution of water and table salt (NaCl) followed by reintroducing the chlorine gas produced. But, the Wikipedia article on "...
0 votes
0 answers
52 views

How to draw delayed picture on the concrete wall?

I have a concrete (stone) vertical wall. I want to put a picture on it. I have several limitations: I want to make it in a security, so I want to place something on the wall, that would be ...
0 votes
1 answer
46 views

What is the best ratio of salt to water when using a salt solution in the electrolysis of water?

I am using the electrolysis of water to provide middle school students with a phenomena to explore chemical and physical change. The set up is producing much more hydrogen gas than oxygen gas and I am ...
1 vote
1 answer
58 views

Could mixing naphtha-based cleaner and industrial floor cleaner produce hazardous substances?

I work in a car dealership, and the guy who cleans the workshop uses an industrial floor scrubber / vac on the floor tiles. On particularly stubborn oil / soot marks, he uses naphtha-based brake ...
0 votes
0 answers
51 views

Is the chemistry behind the "Anoxic Filter" actually real? [Pond/Aquarium Denitrification]

In the Aquarium hobby, there are two methods to remove NO3 from your water: Plants Water changes There are a handful of people and companies that sell porous biological media that claims to create ...
6 votes
0 answers
41 views

Are all humectants sticky?

While using a topical lotion based on ethanol, water and propylene glycol, I noticed that it becomes sticky while drying. Propylene glycol is a humectant and is used for this purpose in ...
6 votes
0 answers
1k views

How to dissolve a strong resin in difficult situation?

The resin is made up from two components: Component A: silicic acid, sodium salt (less than 10% sodium silicate) Component B: Diphenylmethane-4,4'-Diisocyanate, isomers and homologs (MDI,Polymer-MDI)...
3 votes
0 answers
10k views

What exactly is going on in this reaction: sodium bicarbonate (supersaturated aqueous), isopropyl alcohol, and acetic acid (vinegar)?

I observed this reaction by playing around with vinegar and baking soda and I do not completely understand it. Everyone knows that baking soda and vinegar go crazy when mixed together and the solution ...
36 votes
5 answers
49k views

A glass of water with ice-cubes in it. Where's the water the coldest; at the top or bottom?

Suppose that I fill a glass with ice water. As the ice melts, it cools the water around it. Given that cold water is denser than hot water, I would presume that the cold water would sink to the ...
6 votes
5 answers
7k views

How do I lower the surface tension of water without using a detergent?

For many years I've used a Rainbow vacuum, which uses a reservoir of water as the filter. While I'm quite pleased with it, I've found that when trying to vacuum cement dust or wood ash not all of ...
2 votes
1 answer
133 views

How does non-electrolytic tinning work?

Having made diy pcb 's at home I have used things like tinnit which is a clear liquid . When the pcb is dropped into them , a layer of tin forms on the exposed copper regions on the pcb . I was ...
2 votes
1 answer
2k views

Citric acid rust removal and neutralization [duplicate]

I'm currently removing rust from steel with citric acid dissolved in water. I generally use a wire brush as the final treatment to remove any surface rust that the acid loosened up. The pieces under ...
1 vote
1 answer
330 views

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 are ...
2 votes
0 answers
71 views

protecting copper with benzotriazole

I was told years ago that benzotriazole ("slightly soluble in alcohol"), when applied to a copper surface, will protect the surface from corrosion from the air ("forms a monomolecular ...
1 vote
1 answer
51 views

Viability of reduction of oil paint binder and solvent flammability upon disposal via addition of water

As an artist, when disposing of a paper towel or cotton rag containing oil paint, turpentine, odorless turpentine substitute or mineral spirits at the end of a painting session, I generally pour water ...
1 vote
1 answer
475 views

The effects of acetic acid on porous concrete brick and mortar joints

I mistakenly applied a patio cleaner containing acetic acid to my porous concrete facing brick thinking it was biocide. The concentrate solution has a pH of 3 and I diluted it to one part concentrate ...
1 vote
0 answers
18 views

Buffer when testing soda with DCPIP

We are testing a range of sugary drinks (coca cola, orange juice, and chocolate milk) with DCPIP to detect vitamin C. The coca cola has given a false positive and we were wondering if this is due to ...
2 votes
1 answer
243 views

Why is the pH level of carbonation loss decreasing then increases afterwards?

We have done an experiment of the titration of unsealed sprite soda to find the amount of carbonic acid being loss on various duration (0 to 1 hour), due to decrease pressure. The calculation was to ...
12 votes
3 answers
368 views

Why does paper crumble on getting wet?

Why does paper crumble on getting wet? This is something I have noticed hundreds of times but cannot think of an explanation. Does it have anything with water disturbing the intermolecular forces ...
57 votes
4 answers
24k views

Why do shampoo ingredient labels feature the term "Aqua"?

I keep seeing the term "Aqua" in the ingredient labels on several shampoo varieties, but I really don't see why it should be there in the first place. I mean, if the manufacturers just wanted to say ...
0 votes
0 answers
41 views

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, ...
0 votes
0 answers
38 views

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 ...
5 votes
1 answer
605 views

Why would tellurium + sodium hydroxide have worked as a good anti-knock gasoline additive (if it wasn't so smelly)?

The April 22, 2022 Veritasium video The Man Who Accidentally Killed The Most People In History mentions several aspects of the historical use of tetra-ethyl lead in gasoline, the resulting widespread ...
3 votes
2 answers
6k views

How to dissolve calcium sulfate fast?

I would like to dissolve $\ce{CaSO4}$ in a hardened condition (e.g. gypsum board) as fast as possible. I have seen in posts about $\ce{CaSO3}$ that vinegar and sulfamic acid are able to dissolve it. ...
2 votes
2 answers
4k views

Is sulfuric acid still hazardous after it dries?

One of our housemates decided to pour battery electrolyte (which is 30-40% sulfuric acid) into a motorcycle battery on our back porch next to our laundry washer and dryer. He did so extremely ...
7 votes
2 answers
1k views

Why does my sea salt have a best by date? [duplicate]

Seems like it should be good for thousands of years, if not millions.
3 votes
1 answer
85 views

Is a diluted aqueous solution of sodium hypochlorite more stable than a concentrated solution, all else being equal?

On the Clorox website, they recommend that you dilute bleach (NaOCl) in water prior to use for disinfection. They say that you should make a fresh solution each time you need to use it, adding: “Don’t ...
-4 votes
1 answer
44 views

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 ...
1 vote
0 answers
45 views

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 ...
3 votes
2 answers
6k views

Mixing bleach and ammonia?

I know that the two should not be mixed, but i want to know that if the two become mixed in a contained unit, does it build pressure? Or can you seal the container safely untill it can be disposed of ...
6 votes
2 answers
883 views

Scientific Reason for Salt Solution Gaining Volume

A little background to this question: my mom placed a glass with salt and enough water to just cover the salt in a room to "absorb negative energy" out of the room at her office. It obviously "worked"....

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