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Topic: Hydronium


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In the News (Tue 23 Apr 19)

  
  Acids, Bases and pH
In a sample of pure water, the concentration of hydronium ions is equal to 1 x 10
When the compound HCl is dissolved in water it separates into 2 ions: a positively charged hydrogen proton and a negatively charged chlorine ion.
On the left is a solution of pure water in which the concentration of hydronium ions equals the concentration of hydroxide ions.
web.jjay.cuny.edu /~acarpi/NSC/7-ph.htm   (805 words)

  
  Hydronium: Definition and Links by Encyclopedian.com
Hydronium is a positively-charged ion that forms from water in the presence of hydrogen ions.
Hydronium is present whenever an acid is dissolved in water; the hydrogen ions released by the acid do not exist in a free state.
ion, this ion's alkalinity balances hydronium's acidity, and water remains neutral (a hydronium ion concentration of 1 x 10
www.encyclopedian.com /hy/Hydronium.html   (132 words)

  
 Hydronium Summary
Hydronium is the cation that forms from water in the presence of hydrogen ions.
This special case of water reacting with water to produce hydronium (and hydroxide) ions is commonly known as the self-ionization of water.
The acidity of hydronium is the implicit standard used to judge the strength of an acid in water: strong acids must be better proton donors than hydronium, otherwise a significant portion of acid will exist in a non-ionized state.
www.bookrags.com /Hydronium   (1151 words)

  
  ESD Journal - The ESD & Electrostatics Magazine
Available hydronium ions are repulsed from the positive charged bubble surface and tend to the center of the bubble forming a positive charged vapor; whereas, the available hydroxyl ions are attracted to the bubble surface.
Water molecules on the bubble walls are proposed to dissociate into hydronium and hydroxyl ions by cavity QED as the resonant frequency of the bubble coincides with the dissociation frequency of the water molecule.
Lightning based on thundercloud electrification [15] may be described by the hydronium and hydroxyl ions produced from the dissociation of the water molecules as moisture carried to high altitudes condenses and supercools to form graupel, a liquid-ice mixture.
www.esdjournal.com /techpapr/prevens/article.htm   (5152 words)

  
  Hydronium - Biocrawler   (Site not responding. Last check: )
Hydronium is the cation that forms from water in the presence of hydrogen ions.
This special case of water reacting with water to produce hydronium (and hydroxide) ions is commonly known as the self-ionization of water.
The acidity of hydronium is the implicit standard used to judge the strength of an acid in water: strong acids must be better proton donors than hydronium, otherwise a significant portion of acid will exist in an non-ionized state.
www.biocrawler.com /encyclopedia/Hydronium   (574 words)

  
 General Chemistry Online: FAQ: Chemical change: Why is H^+^ sometimes written as H_3_O^+^ in equations?   (Site not responding. Last check: )
If a free hydrogen ion encounters a water molecule, it attacks the unshared electron pairs on the oxygen in the water molecule and forms a hydronium ion, H
The chemical bond that forms between the water and hydrogen ion is covalent and very strong.
Writing hydrogen ions rather than hydronium ions makes neutralization equations a little easier to read and balance.
antoine.frostburg.edu /chem/senese/101/reactions/faq/hydronium.shtml   (106 words)

  
 How hydronium/hydroxyl ions move through strong acidic/basic solutions
He suggested that an excess proton moves from one water molecule to another by ``transferring'' through a hydrogen bond, thus detaching itself from one water molecule, leaving a lone pair (in the Lewis sense) and attaching itself to the lone pair on the water oxygen to which it is transferring.
Given the three hydrogen bonds that hydronium can form, the three protons bonded to the central oxygen often migrate, one at a time, to the center of their respective hydrogen bonds, as if to ``probe'' possible pathways for a proton transfer reaction of the type depicted in the cartoon.
Thus, it is in a perfect condition to accept one of the protons from the hydronium to which it is currently hydrogen bonded, and become the hydronium ion.
www.nyu.edu /classes/tuckerman/honors.chem/lectures/lecture_22/node8.html   (1464 words)

  
 [No title]   (Site not responding. Last check: )
Hydronium exchange resin plays an important role in developing new bacteriophage generation and the quality improvement of the original one.
If in the storage of hydronium exchange resin appears dehydrate, before using it, we should dip it into 10% of salt liquid, make it expanding slowly and dilute it with water, do not dip the resin which is dehydrated into water, avoiding the volume of resin expands rapidly and break.
Hydronium exchange resin is not be used for a moment, we should store it according to the following hydronium form: cation exchange resin should be Na form, anion exchange resin should be CL form, alkalescence anion exchange resin be dissociate amic form.
www.czjh-china.com /english/fw/cpzhishi.htm   (1531 words)

  
 Hydronium   (Site not responding. Last check: )
Hydronium je nesporně-nabitý iont to se tvoří od vody v přítomnosti vodíku ionty.
Hydronium je dar vždy, když kyselina je rozpuštěna ve vodě; ionty vodíku puštěné kyselinou neexistují ve svobodném státu.
Rovnováha této reakce je daleká nalevo pod většinou podmínkami a tak čistá voda bude mít malý hydronium v tom.
wikipedia.infostar.cz /h/hy/hydronium.html   (98 words)

  
 NetLogo Models Library: Strong Acid
Hydronium ions are generated when an acid molecule donates a proton to the a water molecule.
That means that all the H-A is converted to hydronium ions and all of the B is protonated, so that concentration of the original acid is equal to the concentration of hydronium ion.
Hydronium ions and hydroxide ions are oppositely charged and react readily together.
ccl.northwestern.edu /netlogo/models/StrongAcid   (839 words)

  
 Titrations and Buffers   (Site not responding. Last check: )
If the concentration of the hydronium ions increases, the reaction moves to decrease the concentration of the hydronium ions (and maintain the status quo).
The hydroxide ions react with the hydronium ions.
In fact, the concentration of hydronium ions from the acid is negligible compared to the concentration from the water autoionization.
www.scientia.org /cadonline/Chemistry/acidbase/titration.ASP   (1789 words)

  
 pH_scale   (Site not responding. Last check: )
Hydronium ions react with hydroxide ions in solution to produce water.
A solution in which the concentration of hydronium ions exceeds the concentration of hydroxide ions is known as an acidic solution, while a solution in which the concentration of hydroxide ions exceed the concentration of hydronium ions is known as a basic solution.
A solution is neutral (neither acidic nor basic) when the hydronium ion concentration equals the hydroxide ion concentration.
www.csun.edu /~vceed002/BFI/lessons/pH_scale/pH_scale.html   (1756 words)

  
 Proton transport in water
The primary solvation structure of hydronium in water is one in which it is coordinated by three water molecules, forming the so-called "Eigen" cation, H
The hydroxide case is complicated by the fact that of the two solvation structures formed by the hydroxyl ion, one of them cannot diffuse.
Ab initio molecular dynamics simulation of the solvation and transport of hydronium and hydroxyl ions in water.
homepages.nyu.edu /~mt33/ionsolv/ionsolv.html   (1498 words)

  
 CiteULike: Structure and dynamics of hydronium in the ion channel gramicidin A.   (Site not responding. Last check: )
The effects of the hydronium ion, H(3)0+, on the structure of the ion channel gramicidin A and the hydrogen-bonded network of waters within the channel were studied to help elucidate a possible mechanism for proton transport through the channel.
Several classical molecular dynamics studies were carried out with the hydronium in either the center of a gramicidin monomer or in the dimer junction.
In both cases the average O-O distance between the hydronium ion and its nearest neighbor water molecule was found to be approximately 2.55 A, indicating a rather strong hydrogen bond.
www.citeulike.org /user/Pedrora/article/694721   (429 words)

  
 Reference Data Sheet For Chemical And Enzymatic Drain Cleaners
Acid drain cleaners work via chemical reaction between the hydronium ion and the blockage material(s) and liberation of heat as the solution is diluted by water in the pipes (or, "heat of solution").
The hydronium ions may act on the blockage materials in "displacement" reactions (e.g., formation of precipitates and/or gases), neutralization, or by oxidation-reduction reactions (a change in the oxidation states of the elemental components of the reactants).
An indication of the measure of the concentration of hydronium ions is an acid's pH.
www.meridianeng.com /draincle.html   (2243 words)

  
 curvedarrows.html
It is also important that your curved arrows be drawn neatly and precisely, clearly showing the atomic origin of the electron pair at the tail of the curved arrow and the electron pair destination at the head of the arrow.
We draw a curved arrow to show the bonding electron pair between the hydrogen and oxygen of the hydronium ion moving to become the sole property of the oxygen atom.
The oxygen of the hydronium ion gains a lone pair of electrons that is used to share with the hydrogen, so its formal charge decreases by one unit (neutral to +1).
web.chem.ucla.edu /~harding/tutorials/curvedarrows/curvedarrows.html   (1233 words)

  
 unit02-sect02-les01-lessona   (Site not responding. Last check: )
The reaction is stoichiometric because hydronium is reacting with a base that is stronger than nitrite (in the acid-base table, sulfide is much lower than nitrite)
The horizontal line between nitrite and fluoride in the acid-base strength table is used to determine whether or not this reaction is stoichiometric.
Acid base reactions that do not involve hydronium or hydroxide are assumed to be non-stoichiometric.
www.cdli.ca /courses/chem3202/unit02/section01/lesson04/3-lesson-a.htm   (1751 words)

  
 Dissociation of water   (Site not responding. Last check: )
The process is an equilibrium where the reactants, intact water molecules, dominate the mixture.
At equilibrium the molarities for the hydronium ion and hydroxide ion are equal.
Water normally exists as a mixture of molecules, hydroxide ions and hydronium ions.
www.800mainstreet.com /acid_base/dissociation_of_water.html   (172 words)

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