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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HOw can I calculate mass of solute given mL and mol/L

So I've been stumped on a problem for a very long time. I've just started chemistry so I am sort of new to this. Any help would be appreciated: Calculate the mass of solute that is needed to prepare ...
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4answers
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What is the difference between galvanization and sacrificial protection?

If we use zinc in both methods, then the same process occurs: zinc corrodes in preference to iron, and eventually zinc has to be replaced. So what's the difference?
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The pH level of a neutralized solution [closed]

i mixed nitric acid and sulphuric acid with water. Before disposing water i want to neutralize the solution. what should i do?
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1answer
3k views

Hand Sanitizer Chemical Changes

I keep a bottle of hand sanitizer on my desk at work, as I touch a lot of things throughout the day. When I used it yesterday, a bit must've been left in the pump track or opening. So I was about to ...
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1answer
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How to modify viscosity of ZnO ink?

I have stumbled upon these instructions on how to create $\ce{ZnO}$ nanoparticles. I am interested in making a DIY ink, for use with a parallel metal plate pen and a piezo-actuated microdrop nozzle. ...
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2answers
5k views

How to Prepare a Buffer Solution?

Problem I am given the task of preparing three buffer solutions at pH $10$, $9.5$, and $9.0$ . I have available concentrated ammonia and $\pu{3M}$ hydrochloric acid. The buffer capacity desired is $\...
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4answers
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Synthesis of hydrazine with bleach and ammonia

I am trying to make rocket fuel using hydrazine, hydrogen peroxide and home products. I want to put an action figure in orbit. Is there any way to synthesize hydrazine with bleach and ammonia, using $...
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why should we add the fat slowly when making an emulsion?

I'm sorry if this is in the wrong place but recently I realized that every time I got told to make an emulsion even when cooking (ie making mayo or cake batter) it is instructed to add the fat (or ...
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Are oxides of sulphur and carbon adsorbed into limestone/marble?

Oxides of sulphur and carbon are commonly present in the atmostphere in areas close to industries, can such oxides get adsorbed into the surface of limestone and marble and cause discolouration and ...
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I need to know the decay rate of h202 mixed with water [closed]

I am trying to find the chemical decay rate of H2O2 34% Water66% mixed with tap water at a 1 to 3 parts water
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Is it safe to open old 100% isopropyl alcohol [closed]

I have a 3 month expired 1 quart bottle of 100% isopropyl alcohol. Someone gave it to me last year when covid started and I totally forgot about it. I believe it’s never been opened. I was originally ...
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2answers
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Sodium Chlorite vs. Chlorine Dioxide

I ordered Sodium Chlorite in the mail and received Chlorine Dioxide. Can they be used interchangeably, or are they different? My background in chemistry is limited so laymen's terms would be ...
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Action of Fuller's Earth on Marble and Limestone

Using Fuller's earth is a very common and harmless way to treat marble and limestone that has been damaged/corroded by atmostpheric pollutants such as PM2.5/PM10 carbon particles (Soot) , Oxides of ...
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2answers
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How much 3% hydrogen peroxide should I add to 1 gallon of household bleach to neutralize it and what will the liquid be that remains?

Wiki and lots of sources all say the same thing. "1 part of 3% hydrogen peroxide to 10 parts water". But I am not trying to neutralize water I want to neutralize laundry bleach. It could ...
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1answer
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How to dissolve brass surrounded by aluminium?

I have a broken off brass needle stuck in a caste aluminum hole. (It’s the pilot mixture jet on a carburetor). I was wondering if there was a chemical that would dissolve the brass while not reacting ...
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Data Analysis Activity [closed]

Activity Background: Five patients (Aliza Aldred, Bob Barton, Conor Chavez, Dwayne Drake, and Emma Eriksen) were administered a drug called warfarin, which is known to slow the formation of blood ...
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Why does the application of external mechanical pressure increase the performance of lithium-ion batteries?

Many electric vehicle batteries - specifically lithium-ion ones considered for this query - can be subjected to external mechanical pressure because it increases battery performance. What components ...
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5answers
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Iron chemistry: acetates for ebonizing wood

I have recently been “brewing” what is commonly called “iron acetate” for ebonizing wood, and I'd like to understand the chemistry of the iron/acetic acid reaction, which should be fairly simple, but ...
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4answers
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Beer freezing after being opened

I am watching the Stoke vs Swansea game, & to be honest, it's pretty boring. So much so, that I've started to wonder why it is that my beer has turned into a slushy after being taken out of the ...
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5answers
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Which side of an aluminum foil should I put in contact with food?

Aluminum foil has two sides: a matte one, and a shiny one. My question is: which one should I put in contact with food? Criteria are the lowest risk of toxicity and best qualities for food ...
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What is the rate constant k for the reaction between potassium manganate and oxalic acid?

For my school's chemistry classes, I am investigating the kinetics of the redox reaction between $\ce{K2MnO4}$ and $\ce{C2H2O4}$. I analyzed the data using a colorimeter set to $\pu{565nm}$. ...
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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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1answer
136 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 ...
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1answer
201 views

Universal symbols for molar mass, molarity, and molality

This is a really basic (perhaps trivial) question, but I just want to confirm: What are the SI symbols for molar mass, molarity, and molality? For molality and molarity, there is a difference, but I’...
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Does motor oil get more viscous when heated & what is the meaning of the SAE motor oil code?

The motor oil in my 2004 Pontiac Vibe is 5W-30. My (incorrect) understanding of this SAE nomenclature is that 5W means "Viscosity index of 5 in the winter" (or when really cold - like $\pu{-30 ^\...
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Why is NaCl so abundant in the ocean [closed]

Why is sodium chloride far and away the most abundant salt dissolved in ocean water. Its two constituent ions do have a very high frequency in the crust of the earth but they are far from the most ...
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1answer
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Hydrogen Peroxide & Vinegar Film reversal, can someone help me understand this reaction?

I'm interested in DIY photo development and I came across a reversal process that uses chemicals easily available at the grocery store. The purpose of a reversal process is to take a partially ...
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2answers
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Why are synthetic pH indicators used over natural indicators?

Synthetic indicators seem to be exclusively used when determining the pH of a substance with an indicator (with the exception of that school experiment where you boil cabbage to demonstrate natural pH ...
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1answer
781 views

Comparing basic strength order of amines

In the above question I was asked to compare the basic strength order. So I did it like this: The Nitrogen in I and II will not participate in resonance so the only effect it could produce is ...
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3answers
2k views

Why is milk not sold in food-grade stainless steel bottles? [closed]

I have grown up in a country where milk is stored in a steel container in the fridge at home. That’s what makes me wonder why milk is not sold that way? Nowadays the steel container single wall is ...
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1answer
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Why is bread warm at room temperature?

If I buy a loaf of freshly-made bread and leave it out at room temperature for a day or two, when I reach into the bag the air inside is much warmer than the rest of the room. Why?
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1answer
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Would the mixture of vinegar and baking soda make a cleaning agent?

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 ...
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1answer
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Is it possible to make Dipotassium Phosphate from Mono-potassium phosphate and potassium hydroxide?

Having fertilizer formulated and asked for 100% Dipotassium phosphate, the formulator says its reacting mono-potassium phosphate with potassium hydroxide to make it. Just wanted to double check and ...
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6answers
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Un-denaturing industrial alcohol

I have a question regarding the denaturation of industrial ethanol with methanol to discourage its consumption. The boiling point of methanol is 64.7 °C, while the boiling point of ethanol is 78.37 °...
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1answer
2k views

Chemical reasons for choosing Salt Water or Chlorinated pool?

I am currently researching as too which is better for maintaining the chemical balance in a swimming pool. I have obviously tried the standard Google search for ...
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3answers
24k views

Is poison still poisonous after its 'expiration date'?

As we all know that, Any poison is nothing but a chemical compound. And as discussed in the question: Chemicals-do-have-an-expiry-date! So, my question is: Is poison still poisonous after its '...
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1answer
3k views

Will adding apple cider vinegar to freshly pressed fruit juice preserve it

Would adding apple cider vinegar to freshly cold pressed fruit juice be able to preserve the fruit juice and extend its shelf life? Would the juice change into vinegar with time?
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2k views

How do I clean a silk tie at the knot?

I would like to know how I can clean a silk tie at the knot. I presume it got filthy, over time, due to "fatty" fingers. I am looking for answers either based on 1) good theory or 2) personal ...
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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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1answer
7k views

Will charcoal briquettes (not activated) absorb water out of the air in the house in a subtropical climate?

I live in Florida, an incredibly wet environment where it's very difficult to get moisture out of house without using a dehumidifier 24/7, which is too expensive. Would charcoal briquettes be of any ...
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The pH of tap water changes with time [closed]

My following questions are related to $\mathrm{pH}$ values in irrigation water in plants. I got a $\mathrm{pH}$ meter and I am measuring the tap water and I get an value about 8. My first question: ...
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2answers
390 views

Figuring out the theoretical mass of reactants

I'm working on my chemistry lab report. The initial instructions were to test the hypothesis that the mass of products of a reaction will equal the mass of the reactants. Basically we where given a ...
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2answers
17k views

Using table salt as a way to limit humidity in an unoccupied house

We own a static caravan in the UK (Snowdonia region, so rainy and wet all year round, moderately cold winters) and we leave it unoccupied during Winter (Oct-Feb). We were advised of an apparently ...
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1answer
3k 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 ...
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2answers
7k views

How to determine the acidity or basicity of dissolved salts?

One kg of each substance below is dissolved in a bathtub full of water. Will it be acidic, basic, or neutral? $\ce{KNO2}$ $\ce{HF}$ $\ce{(CH3)3NHBr}$ $\ce{HO-CH2-CH2-O-CH2-Cl}$ $\ce{KNO2}$, $\...
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3answers
11k views

Sugar solutions have a neutral pH in themselves, but it makes your body acidic. Why? [closed]

I'm not an expert, but as far as I understood a sugar solution is completely neutral since sugar can't take hydrogen ions out of the water or donate them in. Sugar is a non ionic compound, so it does ...
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1answer
211 views

The effects of acetic acid on porous concrete brick and mortar joints for someone who has no understanding of chemistry

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 ...
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2answers
144 views

Alcohol (ethanol) distillation: mystery congener

I regularly home-distil small amounts of potable alcohol (ethanol), mainly from fermented sugar(s) solutions (the 'wash'). My still is a box standard, $4.5\mathrm{L}$ electrically heated (safety!), ...
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Does burning plastic completely disintegrate it? Accidentally melted some plastic in a BBQ, wondering if pyrolytic cleaning is an option

I accidentally barbecued some plastic today, making quite a mess. It's a cushion for a lawn chair, so I imagine probably some sort of plastic or polyurethane. Rather than cleaning melted plastic ...
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1answer
169 views

Polyprotic acids and bases

I just have a question on how you handle polyprotic bases. Question: Show how oxalate ion can be a polyprotic base My answer: My question is whether we stop doing the reaction until the oxalate ion ...

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