• How to Make Sulfuric Acid at Home - thoughtco.com

    Battery acid, which may be purchased at an automotive supply store, is approximately 35% sulfuric acid. In many cases, this will be strong enough for your activities, but if you need concentrated sulfuric acid, you just need to remove the water. The resulting acid will not be as pure as reagent-grade sulfuric acid.

  • Knife Skills...How to Cut an Onion - Girl and the Kitchen

    We all know that onions can make you cry (it's the sulfuric acid) and can be a bit strong if using fresh. Here are a few tips to stop the tears and handle the strong taste. 1. If you know you will be making something that has a lot of onions in it, place your onions in the freezer for 15 minutes.

  • Why do onions make you cry? - ZME Science

    Sulfuric acid in your eyes. When onions grow, ... So, there you have it – why onions make you cry, according to science, and how you can stop it. Bon appétit! Tags: cry onion.

  • can you make sulfuric acid from onions? | Yahoo Answers

    Since the fumes from chopping onions create sulfuric acid when they mix with the water around your eyes, I was wondering if it would be at all practical to make a weak sulfuric acid solution by either placing a freshly diced (blended?) onion in water, or bubble the fumes released through water. Any thoughts?

  • sulfuric acid | Structure, Formula, Uses, & Facts ...

    Sulfuric acid is sometimes referred to as the "king of chemicals" because it is produced worldwide in such large quantities.… Pure sulfuric acid has a specific gravity of 1.830 at 25 °C (77 °F); it freezes at 10.37 °C (50.7 °F). When heated, the pure acid partially decomposes into water ...

  • Just Ask: Why Do Onions Make Us Cry? | PBS NewsHour

    Just Ask: Why Do Onions Make Us Cry? ... acid sulfoxide" chemicals from inside the cells react to produce a volatile sulfur gas. This gas wafts up from the onion and reacts with the natural ...

  • Learn Why Onions Make You Cry - ThoughtCo

    Find out why onions make you cry when you cut them. Learn about the chemistry involved and how you can keep it from happening. ... The sulfuric acid burns ...

  • Kids News explainer: How and why do onions make us cry ...

    Once it's there, it reacts in another chemical reaction with your tears, making tiny amounts of yet another new substance called sulfuric acid. The brain recognises the danger of having sulfuric acid near your eyes and tells the glands* around your eyes to start making heaps of tears. The tears wash the sulfuric acid out of your eyes.

  • how to make sulfuric acid from onions - Yahoo Answers Results

  • which acid does onion have? | Yahoo Answers

    Best Answer: "A specific sulfenic acid, 1-propenesulfenic acid, formed when onions are cut, is rapidly rearranged by a second enzyme, called the lachrymatory factor synthase or LFS, giving syn-propanethial-S-oxide, a volatile gas known as the onion lachrymatory factor or LF.[1] The LF gas diffuses through the air and eventually reaches the eye ...

  • What is the purpose of sulfuric acid? | AnswersDrive

    Uses of sulfuric acid. By far the largest amount of sulfuric acid is used to make phosphoric acid, used, in turn, to make the phosphate fertilizers, calcium dihydrogenphosphate and the ammonium phosphates. It is also used to make ammonium sulfate, which is a particularly important fertilizer in sulfur-deficient.

  • If an onion DOES NOT make you cry does that mean it's not ...

    I remember reading many years ago that if onions are refrigerated, they think they are going into winter, and therefor will not release the gases that turn into sulfuric acid upon contact with one's mucous membranes which causes tearing.

  • How to Make Vitriol (Sulfuric Acid) Using the ... - WonderHowTo

    Vitriol is the historic name for sulfuric acid (sulphuric acid), a strong mineral acid frequenting chemistry labs, with the molecular formula H2SO4, comprised of hydrogen and sulfate. Vitriol is used in a large variety of applications, like lead-acid vehicle batteries, fertilizer, ore processing, oil refining and chemical synthesis.

  • Why Does Slicing Onions Make Me Cry? | Live Science

    Gas released by sliced onions mixes with the liquid in your eyes and forms sulfuric acid, a fiery irritant. Skip to main content. Live Science ... Why Does Slicing Onions Make Me Cry? By Michelle ...

  • The Chemical Weapons of Onions and Garlic - The New York Times

    WHAT do garlic and onions have in common with gunpowder? A lot. They're incendiary. They can do harm and they delight. Sulfur is central to their powers. And they helped inspire the work of a ...

  • Why does chopping an onion make you cry? (Everyday Mysteries ...

    Why does chopping an onion make you cry? Unstable chemicals. Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion.

  • Will cooking onions reduce their acid content - Answers

    Onions contain sulfuric compounds that produce sulfuric acid when they waft in the air and make contact with the water in your eye. The sulfuric acid burns your eye and your tear ducts release ...

  • Which acid is present in onion? - Quora

    Onions contain amino acid sulfoxides that form sulfenic acids in the onion cells. Both the enzymes and the sulfenic acids are kept separately in the cells. When you cut the onion, the otherwise separate enzymes start mixing and produce propanethio...

  • What is concentrated sulfuric acid used for? | AnswersDrive

    sulfuric acid: Concentrated Sulfuric Acid. Because the concentrated acid has a fairly high boiling point, it can be used to release more volatile acids from their salts, e.g., when sodium chloride (NaCl), or common salt, is heated with concentrated sulfuric acid, hydrogen chloride gas, HCl, is evolved.

  • How Is Sulfuric Acid Made? | Reference.com

    Sulfuric acid is most commonly made by contact process, explains HowStuffWorks. Sulfur is burned to form sulfur dioxide, which is then further oxidized to sulfur trioxide. The sulfur trioxide is added to sulfuric acid to create disulfuric acid, which is then diluted with water to give the desired concentration of sulfuric acid.

  • Why Do Onions Make You Cry? » Science ABC

    This, when combined with the water in our eyes, becomes sulfuric acid, an irritant. Through several chemical reactions, onion release sulfenic acid. One of the worst parts about cooking is being subjected to the torture of Chopping Onions.

  • How to Chop an Onion Fast Without Crying - My Fearless Kitchen

    Sulfuric acid in your eyes will make them burn and sting. Your body's natural response to that is to produce lots of tears to get the sulfuric acid out. Onions have all these compounds to make sulfuric acid to help protect them against predators.

  • Why Do Onions Make You Cry? | culinarylore.com

    It is called 1-propenesulfenic acid. Another enzyme in the onion called lachrymatory factor synthase converts this acid into syn-propanethial-S-oxide. This is the stuff that causes you to cry. This compound can easily spread out through the air and make contact with your eyes, to which it is an irritant.

  • How To Make Sulfuric Acid From Onions - Video Results

  • Eat to Beat: Onion

    Onion is a member of the Allium genus, which also includes shallots, chives, garlic, and leeks. "Onion" is from the Latin words "one," "oneness," and "unity." Roman farmers used the word "onion" because onions grew without forming multiple bulbs as opposed to garlic and shallots..

  • Why Onions Make Us Cry | HubPages

    Two of the contents released from the onion cells are amino acid sulfoxides and lachrymatory-factor synthase enzymes. When the cells are cut open, the enzymes mix with the sulfoxides and a chain of chemical reactions begins that produces Sulfuric Acid. When Sulfuric Acid gets into your eye, it irritates the nerve ends.

  • Sulfuric acid - Wikipedia

    Sulfuric acid (alternative spelling sulphuric acid), also known as vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4. It is a colorless, odorless, and syrupy liquid that is soluble in water and is synthesized in reactions that are highly exothermic.

  • Why onions make us cry | Science News for Students

    sulfuric acid A strong acid having the chemical formula H 2 SO 4 . Used as a drain cleaner and in lead-acid car batteries, the liquid is able to burn tissues and eat through metals and even rock. tissue Made of cells, any of the distinct types of materials that make up animals, plants or fungi. Cells within a tissue work as a unit to perform a ...

  • Why Do Onions Make You Cry? - Answers for Kids - Inspero

    Which are just above our eyes, send tears to our eyes. These tears flush the sulfuric acid out of our eyes, which is what leads us to cry. The tears flood our eyes and take the sulfuric acid with them. And This Is Why Onions Make You Cry

  • What salt do the following acids make sulfuric acid - Answers

    Onions contain sulfuric compounds that produce sulfuric acid when they waft in the air and make contact with the water in your eye. The... Read More Asked in Elements and Compounds, Acids and Bases

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