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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Is there an ideal acid matrix concentration to use for creating AAS metal standards?

I have seen acid matrix concentrations 1% - 10%. Why is there such variation, and how does each concentration level affect the standard reading?
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What makes glass so strong?

Recently, I am researching about the structure of glass and how it is so strong. However, I found that glass has an amorphous structure and has irregular crystal pattern. This means that glass would ...
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Will Laticrete's Spectralock 1 grout desilver a mirror's edges?

I make/sell mosaic mirrors. I'd like to use Laticrete's Spectralock 1 grout but I don't know if it will desilver the mirror's edges over time. I contacted both Laticrete and the mirror manufacturer to ...
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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 ...
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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 ...
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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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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 ...
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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 ...
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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 ...
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Why does my sea salt have a best by date? [duplicate]

Seems like it should be good for thousands of years, if not millions.
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1 answer
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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 ...
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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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What sugar substitute behaves the most like sugar when baked or cooked?

I'm not a chemist. I'm looking for a sugar substitute that I can use for a cheesecake that behaves as much like sugar when cooked or baked. I've tried stevia (a plant based sweetener)but the filling ...
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Calcium Hydroxide, 98%, extra pure + DI resulted in a bright pink solution

When combined with DI, my 98% calcium hydroxide resulted in a pink solution. I am trying to make limewater for a class demonstration and have only ever seen limewater as a colourless solution. Anyone ...
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6 votes
2 answers
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Sodium Chlorite Listed as Active Ingredient in Anti-Fungal/Anti-Bacterial Fish Medication

My hobby is Fish Keeping. About 6 months ago I picked up a medication called Maracyn Oxy. It's a non-antibiotic treatment for true fungal and some bacterial infections and it works like an absolute ...
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1 vote
1 answer
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Calculating Enthalpy of formation versus Calculating Enthalpy of a reaction not occurring at standard conditions

My understanding of Hess's law and its use in determining the change of enthalpy of a reaction has been challenged recently. Up until recently, I thought that the only way to calculate a chemical ...
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Does lithium grease damage plastics such as ABS & PBT?

I have read that petroleum-based greases damage plastics due to the petroleum-derived nature of most plastics. However, I have seen lithium grease being used in electronics such as the gears in CD ...
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1 answer
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How does soap help in cleaning clothes and rinsing off oil and grease?

When we say that we agitate clothes so that grease particles get separate out from clothes as ionic part of hydrocarbon chains of soap is attached to water and non polar part of chain is dissolved in ...
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1 answer
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Mechanism of successively melting ice with table salt [closed]

Hi I was reading about how regular sodium chloride in itself can melt ice outside, for example ice on roads during low temperatures. However, I am unsure about the exact details, as I have found some ...
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-2 votes
2 answers
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What sort of chemical would require a school to be evacuated? [closed]

I am doing research for a fictional story. I want to create an accident which would force students to be evacuated from a school. Is there a type of chemical spill that might take place in a chemistry ...
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1 vote
1 answer
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Can large, sticky, sodium polyacrylate crystals be coated in a powder to facilitate handling?

I am separating a larger container of sodium polyacrylate crystals into smaller containers for student experiments. Commonly known as "Deco Cubes" and used by florists in decorations and ...
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1 vote
0 answers
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Is shampoo or soap a better emulsifier? [closed]

Made homemade shampoo using: Sodium lauryl sulfate (SLS) Glycerin 95% ethanol Sodium stearate Made homemade soap using: 20% sodium hydroxide Vegetable oil 95% ethanol 20% sodium chloride ...
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Removing bugs and tar from my car with Bounce fabric softener sheets

I just used Bounce fabric softener moistened with water to remove stuck tar and dried bugs from my car. It worked like a charm, wiping it clean in seconds. Why did this work? The web says it ...
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4 votes
3 answers
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Smell produced in reaction of sodium hydroxide and aluminium

I was doing an experiment with $\ce{NaOH}$ dissolved in some $\ce{H2O}$ and aluminium. My textbook says that the following reaction takes place $$\ce{2 NaOH + 2 H2O + 2 Al -> 2 NaAlO2 + 3 H2}$$ It ...
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What is the difference between PEF and PTF bioplastics?

I am trying to research single use plastics replacements, and wanted to explain how PEF and PTF are a good choice. Although as I am researching I can't find clear information about them, also how they ...
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1 answer
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Where are the C and H atoms in 1,3,3,3-Tetrafluoropropene? [closed]

I'm learning about refrigerants, and one refrigerant is R-1234ze, otherwise known as 1,3,3,3-Tetrafluoropropene. On Wikipedia, it says that the chemical formula is $\ce{C_3H_2F_4}$. But, Wikipedia ...
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6 votes
1 answer
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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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3 votes
1 answer
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Why are holes appearing in this aluminum kitchen foil on my radiator?

I thought I would try to deal with dehumidified air from radiators by filling simple troughs of water placed on the top, which in theory would evaporate water as the radiator heated the air. I crafted ...
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3 votes
1 answer
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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 ...
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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, DMT. But ...
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Why do we clarify water with alum, but beer/cider/wine with bentonite?

My understanding of clarifying (floccing) liquids is that we add a mineral with an electric charge, which attracts suspended particles (like bacteria) which I assume have the opposite charge. The ...
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Can gases float on each other?

So I want to know do gases have the same concept as water and oil ? Like if I put some hydrogen and helium in a room with 0% air will they float on each other like the hydrogen go down and the helium ...
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12 votes
1 answer
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Why measure both alkalinity and pH in pools if pH alone tells us how acidic or basic something is?

I am trying to better understand the chemistry of maintaining my pool so that I can use the least amount of chemicals to control algae growth and I'm confused by the need to measure both total ...
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Can a damaged neoprene (polychloropren) or rubber coating be cured (hardened) using a hot air gun and a curing agent?

Polymers can be hardened by a process known as vulcanization (curing of elastomers), a chemical process that involves a curing agent and heat. According to Wikipedia, for the vulcanization of rubber, ...
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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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2 answers
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Cation and anion bond [closed]

I'm new to chemistry still in a sense - I'm doing AP chemistry and the stuff we learnt in school left a lot of gaps that would have made understanding and grasping the concepts much easer if they had ...
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-6 votes
2 answers
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Poisoned Kitchen Sink? [closed]

I wonder…I have a 20 years old stainless kitchen sink in good condition. “Somebody” poured “Green Gobbler” into the sink. Green Gobbler is a Drain Clog Disolver (supposed to be kitchen sink safe and ...
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-3 votes
1 answer
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Why is Denaturated alcohol made poisonous? [closed]

I understand the need to denaturate alcohol, as to have a material that can be used for non-food products without the heavy alcohol beverage tax. So, adding a foul tasting bitter substance like ...
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0 answers
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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 ...
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2 votes
1 answer
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How to safely ship 5 litre container of liquid chemicals into glove box?

I need to transfer a 5 litre container of oxygen sensitive liquid chemicals within an inert atmosphere to smaller 100ml bottles. I'm going to do so using a vacuum glove box purged with nitrogen. I ...
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-1 votes
1 answer
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What burns my nose? [closed]

I have a buddy that, lately, has amused himself by blasting a lit JetBoil (camping stove with isobutane/propane mix) with a can of Dust-Off compressed air, to create a giant sheet of flame. The fumes ...
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2 votes
1 answer
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Storage solution for oxygen sensitive liquid chemicals?

I'm needing to transfer oxygen sensitive liquid chemicals from a 5 litre bottle to many 100ml storage solutions. Since I'm transferring a large quantity I plan on operating within an inert atmosphere ...
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Dry ice sublimation rate in water

As I got some a finger sized of dry ice in water, it started to bubble vigorously as expected and gave off a lot of smoke. But after 3 minutes or so, the rate of sublimation seems to slow down a lot, ...
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2 votes
1 answer
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Determining ppm concentrations from food label information for ICP-OES analysis?

Overview: I am looking to determine what ppm values of trace metals are present in a particular formula while considering digestion, dilution, and detection limits for ICP-OES. For example, one ...
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How can I dissolve carbon using generally available substances? [closed]

I am asking this question out of despair: my wife burned to death crèpes dough into our induction stove. I tried all usual products (the ones to clean the stove, vinegar, then sodium bicarbonate left ...
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11 votes
2 answers
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Peak in beer freezing temperature plot

I left an open beer in the freezer while monitoring its temperature. The first minutes works as expected. But after the plateau, at about −8 °C, a peak appeared: I thought it was an artefact because ...
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Best practices to obtain small quantity of sealed solution without oxidising entire solution?

I'm ordering liquid based chemicals which only come in large bulk quantities. These solutions have a shelf life of approximately 2 years unopened, but 2 - 3 weeks once opened and oxidation kicks in. ...
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-1 votes
2 answers
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What is the difference between mole and molar mass?

In my book it says 1 mole of carbon =1gram atom of carbon =12 gram if I see this relation that seems to me that 1 mole is mass of an atom In grams. But molar mass is different and why we use for ...
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Is it possible to find Molarity from the number of moles and density of solution?

Lets say we have the following data: Number of moles of NaCl = 3; Density of NaCl solution = 1.25g/L; Find molarity... Molarity = No. of moles of solute/ volume of solution in L we've been given the ...
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0 votes
1 answer
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Need good aproximation to the atomic composition of late 1980's expanded polystyrene foam

I'm not a chemist and what little I know about expanded polystyrene (EPS) foam has been found by looking at articles on the internet. At work I need an approximation to the atomic composition (at %) ...
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