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Topic: Ethanoic acid


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In the News (Tue 19 Mar 19)

  
  #1 Site For Learning Chemistry
The next acid with two carbon atoms is called ethanoic acid CH Its common name is acetic acid.
Ethanoic acid is also called acetic acid or vinegar.
Acetic acid is used for coagulation of latex.
home.att.net /~cat6a/org_chem-IX.htm   (1247 words)

  
  Molecular Expressions: Science, Optics and You - Intel Play QX3 Computer Microscope Movie Gallery
Malonic Acid - Malonic acid is a dicarboxylic acid of ethane that is primarily used in the synthesis of barbiturates.
Oxalic Acid - Oxalic acid is present in the sap of many plants and is common in vegetables as the potassium or calcium salt.
Sulfosalicylic Acid - Sulfosalicylic acid is a trifunctional aromatic compound that undergoes reactions typical of phenols, carboxylic and sulfonic acid moieties.
micro.magnet.fsu.edu /optics/intelplay/moviegallery/movieindex.html   (1180 words)

  
  Untitled Document
ethenyl ethanoate (vinyl acetate) by the reaction of ethene, ethanoic acid (acetic acid) and oxygen in the presence of a palladium-lithium acetate catalyst.
propenoic acid (acrylic acid) by the vapour phase reaction of methanal (formaldehyde) and ethanoic acid (acetic acid) in the presence of a catalyst
in the oxidation of 1,4-dimethylbenzene (p-xylene) to benzene-1,4- dicarboxylic acid (terephthalic acid)
www.iupac.org /didac/Didac%20Eng/Didac02/Content/P13.htm   (245 words)

  
 ethanoic acid
In the pure state it is a colourless liquid with an unpleasant pungent odour; it solidifies to an icelike mass of crystals at 16.7°C/62.4°F, and hence is often called glacial ethanoic acid.
Ethanoic acid is produced by the oxidation of ethanol.
Cellulose (derived from wood or other sources) may be treated with ethanoic acid to produce a cellulose ethanoate (acetate) solution, which can be used to make plastic items by injection moulding or extruded to form synthetic textile fibres.
www.curantbun.com /reference/encyclopaedia/hutchinson/m0009883.html   (324 words)

  
 ethanoic acid
In the pure state it is a colourless liquid with an unpleasant pungent odour; it solidifies to an icelike mass of crystals at 16.7°C/62.4°F, and hence is often called glacial ethanoic acid.
Ethanoic acid is produced by the oxidation of ethanol.
Cellulose (derived from wood or other sources) may be treated with ethanoic acid to produce a cellulose ethanoate (acetate) solution, which can be used to make plastic items by injection moulding or extruded to form synthetic textile fibres.
www.tiscali.co.uk /reference/encyclopaedia/hutchinson/m0009883.html   (238 words)

  
 an introduction to acid anhydrides
Ethanoic anhydride is a colourless liquid, smelling strongly of vinegar (ethanoic acid).
The smell is because ethanoic anhydride reacts with water vapour in the air (and moisture in your nose) to produce ethanoic acid again.
Ethanoic anhydride can't be said to dissolve in water because it reacts with it to give ethanoic acid.
www.chemguide.co.uk /organicprops/anhydrides/background.html   (647 words)

  
 Carboxylic Acid Reactivity
Acetic acid is ten times weaker an acid than formic acid (first two entries in the second row), confirming the electron donating character of an alkyl group relative to hydrogen, as noted earlier in a discussion of carbocation stability.
Reactions in which the hydroxyl group of a carboxylic acid is replaced by another nucleophilic group are important for preparing functional derivatives of carboxylic acids.
Acid catalysis is necessary to increase the electrophilic character of the carboxyl carbon atom, so it will bond more rapidly to the nucleophilic oxygen of the alcohol.
www.cem.msu.edu /~reusch/VirtualText/crbacid1.htm   (3475 words)

  
 Acetic acid - Wikinfo
Acetic acid is a molecule central to biochemistry, and is produced in some amount by nearly all forms of life.
In aqueous solution, acetic acid can lose the proton of its carboxyl group, turning into the acetate ion CH The pKa of acetic acid is about 4.8 at 25 °C, meaning that about half of the acetic acid molecules are in the acetate form at a pH of 4.8.
Acetic acid, when complexed with coenzyme A, is central to the metabolism and biosynthetic processes of almost all forms of life.
www.wikinfo.org /wiki.php?title=Acetic_acid   (4135 words)

  
 ethanoic acid
In the pure state it is a colourless liquid with an unpleasant pungent odour; it solidifies to an icelike mass of crystals at 16.7°C/62.4°F, and hence is often called glacial ethanoic acid.
Ethanoic acid is produced by the oxidation of ethanol.
Cellulose (derived from wood or other sources) may be treated with ethanoic acid to produce a cellulose ethanoate (acetate) solution, which can be used to make plastic items by injection moulding or extruded to form synthetic textile fibres.
www.uk.tiscali.com /reference/encyclopaedia/hutchinson/m0009883.html   (298 words)

  
 Acid, Alkali and pH
Acids such as hydrochloric acid, nitric acid or sulphuric acid are strong acids.
Acids such as citric acid or ethanoic acid (vinegar) are weak acids.
The amino acids are converted into urea and uric acid which have to pass into the bloodstream to be eliminated by the kidney.
www.peter-thomson.co.uk /foodc/acid_alkali_and_ph.html   (600 words)

  
 Acids and Alkalis   (Site not responding. Last check: )
almost all of the acid is in the form of hydrogen ions and the negative ions associated with the acid (sulphate, chloride or whatever).
In this way, an equilibrium is set up in which the rate at which covalent ethanoic acid is breaking up to form ions is the same as the rate at which the ions are recombining to form the covalent molecules.
For instance, sulphuric acid is a strong acid, but if you put a single drop of sulphuric acid in a bath of water, the solution would be so weakly acidic that it wouldn't even be detectable.
richardbowles.tripod.com /chemistry/acids/acids.htm   (1228 words)

  
 Introduction to Carboxylic Acids
Ethanoic acid often originates in wine by means of the above reaction causing the wine to become sour.
Acetic acid in the form of vinega is used as a preserving agent and in the textile industry.
An ester (to be discussed later) of ethanoic acid and the hydroxyl group of salicylic acid produces acetylsalicylic acid or aspirin.
www.3rd1000.com /chem301/chem301u.htm   (761 words)

  
 Singapore Science Centre: ScienceNet|Physical Sciences|General Chemistry
Actually, the manufacture of vinegar is a two-stage process -- (a) the conversion of sugar to alcohol by yeast; and (b) the conversion of alcohol to acetic acid by bacteria.
Commercially, the acid is usually produced by such chemical processes as the oxidation of acetaldehyde with air in the presence of catalysts.
Acetic acid is an important organic acid and industrial chemical.
www.science.edu.sg /ssc/detailed.jsp?artid=2278&type=6&root=5&parent=5&cat=53   (533 words)

  
 Carboxylic Acids and Derivatives
Carboxylic acids are particularly good at hydrogen bonding to other carboxylic acids and so tend to have rather high boiling points and melting points than other molecules of similar size and shape.
Ethanoic acid has a slightly higher viscosity, and a slightly higher boiling point than does water.
Considering that butanoic acid gives rise to the acrid smell of rancid milk, while ethyl butanoate gives rise to the tarty aroma of fresh pineapple, it is clear that converting a carboxylic acid to an ester can have a dramatic effect on the physical and chemical properties of the acid.
www.ferris.edu /htmls/academics/course.offerings/balandap/Organic/CHEM124/Problems/Carboxylic_Acids_notes.htm   (2380 words)

  
 Titrations, Indicators and Titration Curves
When an acid and base have been mixed in equivalent amounts (according to the chemical equation for the reaction) they are said to have neutralised each other.
For example, at the equivalence point of a titration involving ethanoic acid and sodium hydroxide, the only product is an aqueous solution of the ionic compound sodium ethanoate.
It is the ethanoate ions behaving as a base that cause the solution at the end-point to have an alkaline pH.
www.avogadro.co.uk /chemeqm/acidbase/titration/phcurves.htm   (948 words)

  
 Greener Industry - Ethanoic Acid - Production Method
Up to the 1970s, ethanoic acid was produced industrially by the direct oxidation of naptha or butane, and this process is still in operation in some countries.
Ethanoic acid was also made by the oxidation of ethene via the Wacker process.
Since 1997, ethanoic acid is increasingly being produced by the BP Cativa process, also involving the carbonylation of methanol.
www.greener-industry.org /pages/ethanoicAcid/3ethanoicAcidPM.htm   (314 words)

  
 Carboxylic acids
Oxidation of ethanol to ethanoic acid can be brought about by oxidation by air or acidified potassium dichromate solution.
The carboxylic acids are a family of organic acids.
Ethanoic acid is a weak acid(pH5 - 6)....this is because it does not produce as many H
users.tinyworld.co.uk /dslade/Carboxacids.html   (399 words)

  
 Alkanols, Carboxylic Acids and Esters
Carboxylic acids are weak acids, forming salts with bases such as sodium hydroxide and ammonia.
A common such acid is ethanoic acid (popularly called acetic acid), which is a constituent of vinegar.
Vinegar is an aqueous solution (about 5%) of the carboxylic acid ethanoic acid CH It arises from the bacteria-induced oxidation of ethanol in wine.
www.physchem.co.za /Organic/Others.htm   (573 words)

  
 Acids and Bases
Weak acids like ethanoic acid, CH H, are partially dissociated, this is shown by replacing the arrow in the equation with an equilibrium sign.
of the acid is used and measured with a pipette.
ethanoic acid and sodium ethanoate or a weak base and its salt eg.
www.teachmetuition.co.uk /Chemistry/Acids_and_Bases/acids_and_bases.htm   (1046 words)

  
 acid anhydrides and water, alcohols or phenol
Ethanoic anhydride is the only one you are likely to come across for UK A level purposes.
You can think of the entire bit of the ethanoic anhydride shown in red as being exactly the equivalent of the chlorine atom in the acyl chloride as far as these reactions are concerned.
Ethanoic acid is formed as the second product rather than hydrogen chloride gas.
www.chemguide.co.uk /organicprops/anhydrides/oxygen.html   (1095 words)

  
 Photographic Chemical Descriptions
White vinegar is a dilute solution of acetic acid, usually 3 to 6% acetic acid, although distilled vinegar may have a higher acid content.
Glacial acetic acid may be diluted to 28 percent by mixing 3 parts of Glacial acetic acid with 8 parts of water.
One gram of this crystalline compound is equivalent to 0.8890 gram ascorbic acid, or 1 gram of the acid is equivalent to 1.1248 grams of sodium ascorbate.
www.jackspcs.com /chemdesc.htm   (9672 words)

  
 Products Acetic Acid
Acetic acid, ethanoic acid, ethylic acid, glacial acetic acid
Acetic acid is an organic chemical compound used for the production of many downstream products.
It is one of the simplest carboxylic acids, and is an important chemical reagent and industrial chemical.
www.polychemistry.com /products_acetic.php   (75 words)

  
 If I mix, say, 5 moles of ethanoic anhydrate with 10cm of water, will the molari...
I'm just thinking that "anhydrate" suggests that adding water to it will chemically change it into 5 moles of something else (like ethanoic acid?) and some of the water will be used up in the process.
I'm not sure if you'd still have the same amount of Ethanoic anhydrate (anhydrite?) before and after adding the water.
If we put a system together which has all the reactants on the left side but nothing on the right, it will tend to shift rightwards, that is some of the Anhydrate will combine with water to form Ethanoic Acid.
www.funtrivia.com /askft/Question58836.html   (315 words)

  
 Determine the equilibrium constant - Kc; of ethanoic acid reacting with ethanol producing an equilibrium to form ethyl ...
Determine the equilibrium constant - Kc; of ethanoic acid reacting with ethanol producing an equilibrium to form ethyl ethanoate and water.
Home: Chemistry: Determine the equilibrium constant - Kc; of ethanoic acid reacting with ethanol producing an equilibrium to form ethyl ethanoate and water.
The theoretical value of the equilibrium constant is calculated from standard conditions and therefore cannot be wholly compared with the value obtained from the room temperature and air pressure present in the laboratory.
www.studentcentral.co.uk /determine_equilibrium_constant_-_kc_ethanoic_acid_6893   (537 words)

  
 Types of Chemical Reaction, Definitions and Examples
Methanol and ethanoyl chloride ---> methyl ethanoate and hydrogen chloride
A reaction where water is one of the reactants, and a larger molecule is split into two smaller molecules, one of which has the hydrogen from the water and the other has the OH group from the water.
CH This example is the reverse of the earlier esterification reaction, and is usually carried out in the presence of potassium or sodium hydroxide, which then react with the acid formed to give the salt of the acid.
www.sky-web.net /science/reaction-types.htm   (1135 words)

  
 Preparation of ethyl ethanoate
Glacial ethanoic acid is pure ethanoic acid CH It is called glacial because on cooling it forms glassy crystals.
Concentrated sulphuric acid is a catalyst for the esterification reaction
Run the ethyl ethanoate into a small conical flask, add a few lumps of granular anhydrous calcium chloride, and shake occasionally until the liquid is clear.
home.clara.net /rod.beavon/ethanoic_prep.htm   (696 words)

  
 Sulphuric Acid
Sulphuric acid is the strong acid produced by dissolving sulphur trioxide in water.
For example, Sulphuric Acid, H2SO4, which is a strong acid is fully dissociated, and all the displaceable hydrogen in the acid is present in solution as Hydrogen Ion, H(+).
Sulphuric acid was manufactured by the lead-chamber process until the mid-1930s, but this process has now been replaced by the contact process, involving the catalytic oxidation of sulphur dioxide.
www.ucc.ie /academic/chem/dolchem/html/comp/h2so4.html   (1300 words)

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