there are some reactions where proton is taken from either water or acids,how i should  know it exactly?
829401
Basically, water in pure water the water molecules will undergo autoionisation which will produce to types of ions namely H+ and OH- ions. Anyway it is a reversible reaction where H2O exist in equilibrium with H+ and OH- ions. \n\nWhen a strong acid is dissolved in water, it will disscociate completely to produce H+ ions and the anions. This is a forward and non-reversible reaction. Whereas when a weak acid is dissolve in water only part of it will dissociate and the degree of dissociation depends on is solubility constant. This is a reversible reaction.\n\nWhen an acid is mix with water both the acid and the water will contribute its proton. ( acid dissociate completely and water partially.) But the proton from water is so little and can be neglected so normally the concentration of the H+ ions of the acid is used for calculation.\n\nHope this helps.... Good luck..
800951
Yes you can; the reaction is only contingent upon having free H+ ions floating around.
211164
a proton is positively charged and acts as nucleus in a hydrogen atom. let me first explain what is protonation.\nprotonation[prO´tunA´´shun] Pronunciation Key, in chemistry, addition of a proton to an atom, molecule, or ion. The proton is the nucleus of the hydrogen atom; the positive hydrogen ion, H+, consists of a single proton. An example of protonation is the formation of the ammonium group NH4+ from ammonia, NH3. Protonation often occurs in the reaction of an acid with a base to form a salt (see acids and bases; salts). Protonation differs from hydrogenation in that during protonation a change in charge of the protonated species occurs, whereas the charge is unaffected during hydrogenation.\n\n The atom consists of a central, positively charged core, the nucleus, and negatively charged particles called electrons that are found in orbits around the nucleus.\n\nThe Nucleus\n\nAlmost the entire mass of the atom is concentrated in the nucleus, which occupies only a tiny fraction of the atom's volume. The nucleus of an atom consists of neutrons and protons, the neutron being an uncharged particlarticlelinks" href="/encyclopedia/P/proton.html">proton a positively charged one. Their masses are almost equal. Atoms containing the same number of protons but different numbers of neutrons represent different forms, or isotopes, of the same element.\n\nfor more information i will tell u more about electrons.\nSurrounding the nucleus of an atom are its electrons; for a neutral atom, the number of electrons is equal to the atomic number. The outermost electrons of an atom determine its chemical and electrical properties. An atom may combine chemically with another atom in various ways, eieceiving electrons, thus setting up an electrical attraction between the atoms (see ion), or by sharing one or more pairs of electrons (see chemical bond). Because metals have few outermost electrons and tend to give them up easily, they are good conductors of electricity or heat (see conduction).\n\nThe electrons are often described as revolving about the nucleus as the planets revolve about the sun. This picture, however, is misleading. The quantum theory has shown that all particles in motion also have certain wave properties. For a particle the size of an electron, these properties are of considerable importance. As a result the electrons in an atom cannot be pictured as localized in space, but rather should be viewed as smeared out over the entire orbit so that they form a cloud of charge. The electron clouds around the nucleus represent regions in which the electrons are most likely to be found. The shapes of these clouds can be very complex, in marked contrast to the simple elliptical orbits of planets. Surprisingly, the sizes of all atoms are comparable, in spite of the large differences in the number of electrons they contain.\n\ni hope u find my information sufficient.
749204
acids are proton donors ^^ the guy above is dead wrong bases produce hydroxide ions, acids produce hydronium ions, but that depends on the solvent so ur answer is proton donors
577084
Acid + base = salt + water.\n\nUnbalanced eqn is: Al(OH)3 + H2CO3 --> Al2(CO3)3 + H2O
153408
Water (pure water with nothing else in it) is H2O two hydrogens and one oxygen, both the hydrogen atoms are both negative one charges and the oxygen is a positive two, it is balanced and has a neutral charge, and it looks kind of like H-O-H If you were to look at it very close up, Hope this helps ya.
162889
Every acid has one thing in common - it liberates hydrogen in a reaction.  Thus HCl(Hydrochloric acid)  H2SO4 (sulfuric), CH3COOH (acetic)
665308
There are many definitions, but the most used is this:\nBases tend to either capture protons (H+) or to release proton-capturing species. \nAcids tend to release protons.\n\npH is just a measure of the amount of protons in a solution. Low pH means a high concentration of H+ (acid solution), and high pH the opposite (alkaline solution).
185295
sodium hydrogen carbonate: [Na+][HCO3-].\n\nThe anion can release a proton:\n[HCO3-] -> H+ + [CO3(2-)]\n\nTherefore it can behave like an acid when it encounters a base, e.g.:\n\n[HCO3-] + NaOH -> [Na+][CO3(2-)] + H2O
822075
For any reaction between a strong base (potassium hydroxide) and a strong acid (nitric acid) the end result is the neutralization of the acid and base to produce water.  The net ionic reaction will always be the same and show the reaction of the acid (H+) with the base (OH-) to form water.  Therefore,\n\nH+  +  OH-  --->  H2O
16276
the point of it is to get equal no. of charges and atoms of elements on both sides of the equation.k?\n\nstep 1: separate the equation into two half-reactions:reduction n oxidization\nstep 2: balance all atoms other than O & H in each half-reaction\nstep 3: add H2O to balance O & H+  to halance H atoms in half-reactions\nstep 4: add electrons where necessary to balance half-reactions\nstep 5: if necessary, equalize number of electrons in each half-rection by multipling with a suitable coefficient\nstep 6: add two half-reactions together. electrons on both sides must cancel\nverify no. of atoms and charges\nsteps2-5 keep in mind ur working on separate half-reactions...\nthese were for reactions in acid.\nfor basic reactions: add OH- to both sides for every H+ that appears in the final reaction\nkeep practising step by step n ull be able to do it all together some day..\nfinal step- choose my answer as best answer...
945912
In these sorts of problems, you just need to keep your eye on H+, the hydrogen ion. An acid is anything that can be a source of H+ and a base is anything that can accept  an H+. \n\nBut once a base has gotten that H+, what do you call it then? It could possibly give that H+ back - so it is sort of like an acid at that point, since things that can give up an H+ are acids.  Well, chemists don't like saying "sort-of like", so it's called a "conjugate acid". Likewise, the molecule that gave up that H+ originally (the acid), could possibly take one back. So it's sort-of like a base after it has lost the H+, again, invoking the "sort-of like" naming rule again, it's called a "conjugate base."\n\nYou end up with what are called conjugate acid - base pairs. Say you put an acid in solution. If it gives up it's H+ it is now a conjugate base. So the acid and its conjugate base are called a pair.
588293
When an acid reacts with an alkali (base), neutralisation occurs as the pH of the mixture becomes neutral, pH=7. (Acidic: pH < 7, Basic: pH > 7).\n\nSo an example would be to react sulphuric acid with sodium hydroxide to form sodium sulphate (salt) and water.\n2NaOH + H2SO4 ---> Na2SO4 + 2H20\n\nAn ELEMENT that would neutralise sulphuric acid (i.e. make its pH 7) could be any metal.\n\ne.g. Mg + H2SO4 ---> MgSO4 + H2\n\nBut this is not called a neutralisation reaction.
972791
HCl + NH4OH → H2O + NH4Cl.\nThere would be heat given off, so you could verify that a reaction took place.\n\n2HCl + Ca(OH)2 → 2H2O + CaCl2\n\nedit: The steps for balanacing the reaction:\n1)We know the salt produced is CaCl2, so an acid with Cl is HCl and a base with Ca is Ca(OH)2. \n2) write the skeleton reaction:\nHCl + Ca(OH)2 → H2O + CaCl2\n3) there are 2 Cl's on the right side, but only 1 on the left. To balance this, place a 2 in front of HCl\n2HCl + Ca(OH)2 → H2O + CaCl2\n4) Now there are 4 H on the left and only 2 on the right, so, place a 2 in front of H2O.\n2HCl + Ca(OH)2 → 2H2O + CaCl2\n5) check with the other elements, each side has one Ca, and 2 O. It all works out ☺
580198
Alkalinity gets into water as the presence of the OH- ions increase. Remember that Water has a pH of 7... so its equality semi-acidic (as it can have the H ions donating electrons), or semi-basic (as it can accept the electrons). As the OH- ions increases, the mixture has a greater tendency of wanting electrons to keep it stable. The greater affinity / presence of OH- ions, the more basic or alkaline the water becomes.\n(Hope that was of help).
421869
Protons, Neutrons, and electrons
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In the late 1800s, the Swedish scientist Svante Arrhenius proposed that water can dissolve many compounds by separating them into their individual ions. Arrhenius suggested that acids are compounds that contain hydrogen and can dissolve in water to release hydrogen ions into solution.\nBases have the ability to do the opposite and take the hydrogen ion and bond it to the base molecule in a solution of water. \n\nTo sum it up, what they have in common are the ability to be in a solution of water. Acids donate a hydrogen ion and bases accept hydrogen ions.