Applications of chemistry to reagents and reactions of everyday life. This tag should not be applied to questions which are just about simple chemistry but it is specific to questions about chemistry in an out-of-laboratory or commonplace context.

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10
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3answers
977 views

Why is condensation in dyed beverages colorless?

Does food coloring somehow evaporate and turn into nothing? Or does the beverage itself being much more color intensive? I had a bottle of Gatorade, colored Lemon-Lime (and flavored as such). I ...
0
votes
1answer
17 views

Does acetone eat through Thermoplastic polyurethane and Polycarbonate

I used nail polish remover on an expensive phone case to remove sticker residue (and it worked, no longer sticky). I didn't know it didn't mix well with plastic materials. Did the acetone damage it?
-2
votes
0answers
22 views

Plastic production, use, disposal [closed]

what is the entire chemical lifecycle of a plastic bottle? I'd like to know about... Production What is it made from and how (including all chemicals and additives)? What byproducts are produced in ...
0
votes
1answer
55 views

Boiling dish soap

Is it dangerous to boil dish soap (natural, ex: walgreens brand "ology") while also cooking other foods in the kitchen (ex.pasta)? I was trying to clean some pots and read online that a good way to ...
7
votes
2answers
2k views

Why do soft drinks fizz?

I know it has something to do with carbon dioxide, but what exactly happens and causes the characteristic sound we hear (especially after we shake the bottle)? How do we manage to dissolve a non-polar ...
0
votes
1answer
43 views

Cleaning silver - which method is better? [duplicate]

What is the advantage of this approach over polishing the silver with an abrasive? "Silver tarnish is an outer coating of silver sulfide, $\ce{Ag2S}$, formed when silver reacts with trace quantities ...
7
votes
2answers
115 views

Why there is no change in water level when salt is added?

Let us say we have one glass of water and after that when we add one or two spoon of salt then we notice that salt dissolves in it but when we measure the water level we found that there is no ...
2
votes
1answer
61 views

Quality of water for drinking purposes

As I’m reading about water cations and anions, I read that the benefits we gain from water are of course lots, but the most important of them is the neutralisation of acids ($\ce{H+}$) from the anions ...
2
votes
1answer
32 views

Isolating calcium acetate from water with electrolysis

That's a long page, so you can optionally jump to the "Thunderstorm it" part, but a bit of context is always neat :) Context Say I'm cooking an egg in vinegar. The egg shell is made of calcium ...
2
votes
1answer
24 views

Pb-based pigments and rhodizonate salts

In a previous question, I learned that we can detect lead with sodium / potassium rhodizonate, giving a nice purple color when reacting with pure (elemental?) lead. But in the paint, lead is ...
4
votes
0answers
40 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 ...
15
votes
0answers
105 views

How many times can we recycle one sheet of paper?

Its really interesting to see the process of recycling of paper (as shown in picture below) but at the same time I was thinking like for how many times can one sheet of paper can be recycled ?
7
votes
2answers
94 views

How to detect lead paint on a bicycle?

Recently I started renovating a bicycle. The frame has been painted probably over 30 years ago, and despite holding well, big patches of rust are showing. So it's time to give the bike a new paint ...
14
votes
1answer
2k views

Why super glue does not stick inside their own bottle?

We usually use super glue to stick any two objects but I was wondering like why don't they stick inside their own bottle ?
15
votes
1answer
1k views

Why is europium used in Euro bank notes?

Europium is apparently used as an anti-counterfeiting measure in Euro bank notes because of its fluorescence under UV light. Is there any reason why it is specifically $\ce{Eu}$ and not any of the ...
-1
votes
1answer
58 views

Does the temperature of water affect its ability to extinguish fires?

Since water can be either hot or cold, does its temperature affect its ability to extinguish fires?
0
votes
0answers
37 views

When the heat is absorbed by the ice then ice will melt to form liquid water

My new try: Given data Energy given by reaction =1690 kJ Initial temperature = 0 oC Final temperature = 50 oC C water = 4.18 Jmol-1 K-1 ?Hfus ice = 6.01 kJ*mol-1 Calculate Mass of ice = ? Ice ...
5
votes
1answer
40 views

Why is grease from cooking hard to remove from wood?

Cooking oil that jumps from a frying pan in use and over time accumulates around the frying pan on a wooden surface is sticky and hard to remove. My question is why. Why is it hard to remove? What is ...
0
votes
1answer
44 views

Use bond enthalpies to estimate dH of reaction: [closed]

Use bond enthalpies to estimate $dH$ of reaction: $\ce{HCl(g) + F2(g) -> HF(g) + ClF(g)}$ $\ce{HCl}$ 431 kJ/mol $\ce{F2}$ 158 kJ/mol $\ce{HF}$ 565 kJ/mol $\ce{Cl-F}$ 256 kJ/mol? My efforts: (565 ...
5
votes
2answers
140 views

Are vitamins in tablet are more efficient than the vitamins in their natural source? [closed]

In medical shop I have seen that there are loads of vitamins tablets available but I was wondering like does vitamins in tablet are more efficient than the vitamins which are available in their ...
13
votes
1answer
133 views

Why does milk overflow when boiled?

I was wondering that like whenever I boil milk I just have to keep standing in front of it to make sure that I don't waste any milk but then I was wondering like Why does it even overflow ? In case of ...
2
votes
1answer
46 views

Solubility and Evaporation - Would the concentration still be 1 ppm?

A certain salt has a solubility of 1 mg/1 L. I have 1 mg of this certain salt dissolving in 1 L of water, I have a concentration of 1 ppm. 1st Question: If the solution is left open to evaporation, ...
0
votes
1answer
31 views

Finding the mM concentration of capric acid (decanoic acid) in coconut oil

Im trying to figure out the mM concentration of capric acid in coconut oil. I know that There is 8% capric acid in coconut oil, but I would like to know how much capric acid is in coconut oil in a mM ...
5
votes
1answer
57 views

Are there substances people can put on themselves to prevent catching fire?

This can be very useful for people who are afraid of spontaneous human combustion! But seriously, I heard there are non-harmful chemicals used in some fire extinguishers, so can they maybe be put on ...
7
votes
1answer
297 views

What turns clear liquid soap blue?

Liquid soap that sits in metal pump handles turns blue after a week or so, as in this photo comparing the soap in its initial clear state and then after pumping from the dispenser. The pumps are ...
2
votes
0answers
28 views

Is passivation of stainless steel feasible in the field?

Does anyone have input or experience on passivation of stainless steel, particularly in outdoor environments where submersion of components is not practical due to location or size? Nitric acid (and ...
1
vote
1answer
22 views

Vapour absorption in 'normal conditions'

When is described: "In normal conditions, viscose absorbs 11 to 14% of water vapour. In liquid water, they swell and can absorb 80 to 120% of water." (Clothing Technology) What do they mean with ...
-1
votes
1answer
19 views

Cathode rays produce heat when they fall on a matter

I have studied this many times in my Chemistry F.Sc-1 book that cathode rays produce heat when they fall on a matter but this thing is beyond my comprehension that how they produce heat?
4
votes
0answers
36 views

Can a flame start on water (video included)?

Can a flame a start on a wet piece of paper immersed in water? The video is shown below (not the full video): https://youtu.be/Ey3z8z4Hxtc?t=1h27m29s This is not in English so you might not ...
1
vote
0answers
26 views

Sugar dissolution test

Is there a way to detect whether sugar is completely dissolved in a cup of water other than looking at the bottom of the cup? I was wondering if there is a test or something that can be carried out ...
1
vote
1answer
40 views

Choosing fish-oil that won't oxidize in long travel ?

Fish oil, is susposed to suffer from rancidity(i.e. oxidation) when stored improperly , for example in hot temperature. I'm interested in buying fish oil from abroad(usa) it will be shipped by air ...
2
votes
1answer
59 views

Separate precious metals from catalytic converter

I am looking to separate the small quantities of platinum and palladium in a catalytic converter. However since these are very inert metals I am unsure how to proceed about doing so. Melting the ...
1
vote
1answer
63 views

Tap water leaving white residue after drying

There is no heating or cooling in this process. We recently move to a new house and something strange is happening with the water in every tap of the house. First thing I noticed is when you fill a ...
2
votes
0answers
39 views

Will fire corrode stainless steel?

Thinking of making a stove out of stainless steel. Stainless because it will have a double outer jacket to pass water through and heat it. Will a wood fire sitting directly on stainless steel corrode ...
0
votes
0answers
18 views

Dioxine in lignified materials?

I read that hemp is bacteria resistant. And also that lignified materials, like hemp, can release dioxin when fungi attack the material. How is that possible when hemp is bacteria resistant?
8
votes
1answer
88 views

What would happen if someone consumed a Silica Gel Packet? [closed]

Most packaged goods have the tiny Silica Gel Packets packed along with a clear warning on every single packet. My question is, What exactly would happen if someone actually consumed the contents?
5
votes
1answer
127 views

Why do some gases liquefy easily under pressure and normal room temperature?

Is this a combination of Boyle's and Charles' Laws or simply one of them? I'm confused as to which applies. I don't feel I fully understand the implications of both laws individually and I'm ...
4
votes
3answers
85 views

Liquid-Liquid phase separation

Consider a container that contains a mixture of many liquids. Can two of these liquids phase separate without having any significant effect on other liquids inside the container? Is there a feasible ...
0
votes
0answers
27 views

What solvents can get rid of oil stains?

What kind of solvent would you use to remove an oil based stain? I need help for a chemistry lab report and I tried to look it up but nothing seems to be helping me
2
votes
0answers
41 views

change in state (sublimation and deposition)

I am slightly confused as to how Ii should think of changes in state (especially sublimation and deposition). Should I think of sublimation and deposition as skipping the liquid phase (fig 1) or ...
2
votes
1answer
84 views

Reactivate dried up ink of ballpoint pens

According to this question, ballpoint pens start writing intermittently when the ink is drying up. In other words, the ink is becoming more viscous and does not flow any more. Are there ways to make ...
2
votes
0answers
17 views

What is the difference between moisture regain and water holding capacity?

Water retention is how much water the fibre can retain. Water holding is function of hydrophilicity and construction of the fibre (fabric). What is the difference between those two? Because to retain ...
4
votes
1answer
45 views

Specific gravity of H2O2 bleached viscose

What is the specific gravity of $\ce{H2O2}$ bleached viscose? In literature, I can find that this is $1.52~\mathrm{g~cm^{-3}}$, but for bleached viscose is it not findable. Can I presume $\ce{H2O2}$ ...
8
votes
3answers
1k views

Does salt vaporise?

Does salt vaporise? If I boil a salty water and leave it there until half of the water vaporises, will it be twice as salty as in the beginning? Or exactly the same? Or somewhere in between?
19
votes
3answers
3k views

Drinking 18 M-ohm water

What would be the effect if someone were to drink ultra-pure, 18 M-ohm water? Would they immediately die? Would they just need to pee more? Would $\ce{CO_2}$ from the air (after the bottle is ...
1
vote
1answer
58 views

What reactions create a lot of gas really quickly?

I'm looking for a chemical reaction that produces a large amount of a gas in a very short amount of time (like less than a second). What are my options?
7
votes
1answer
76 views

Smoke alarm ion neutralisation

Smoke alarms are a necessary part of many modern day buildings, especially in laboratories and of course, the family home. According to the World Nuclear Association page Smoke Detectors and ...
9
votes
2answers
72 views

Is there a very stinky chemical solution that isn't a health hazard?

An effective way to disperse rioters & looters would be to send an armored vehicle in to spray them with a very stinky liquid. Is there a chemical that stinks but is not a health risk and that ...
11
votes
1answer
72 views

Does the Battery Bounce Test actually work?

I heard that a good way to test if a battery is dead or alive is to see if it bounces. Supposedly, dead batteries bounce higher than living ones. Can someone tell me if this is a legitimate claim, and ...
3
votes
1answer
73 views

Do all double displacement reactions have precipitates?

I know that most of the double displacement reactions form some kind of precipitates in their products. But do all of the double displacement reactions form precipitates? I have searched on this site ...