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Acid - Wikipedia, the free encyclopedia
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Strong acid - Wikipedia, the free encyclopedia
A strong acid is an acid that dissociates completely in an aqueous solution (not in the case of sulfuric acid as it is diprotic), or in other terms, with a p K a < −1.74. This generally means t...
en.wikipedia.org/wiki/Strong_acid |
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The terms "strong" and "weak" give an indication of the strength of an acid or base. The terms strong and weak describe the ability of acid and base solutions to conduct electricity. If the acid or base conducts electricity strongly, it is a strong acid or base.
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Perchloric acid ... Hydroiodic acid ... Sulfuric acid...
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We now have a fairly complete quantitative description of acid-base equilibrium. To complete our understanding of acid-base equilibrium, we need a predictive model which relates acid strength or base strength to molecular properties.
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This animation demonstrates the difference between a strong acid, hydrochloric acid, and a weak acid, hydrofluoric acid. Click on one of the buttons to see hydrochloric acid, HCl or hydrofluoric acid, HF, dissolved in water.
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The strength of an acid is defined by its ability to lose an H+ ion to water. Two factors influence this ability: the bond energy and the electron density around the H in the bond...
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That because some acid molecules have 2 or 3 H+ ion to donate. Acid Strength can mean a couple of different things. a) Is that species of molecule strongly acidic? When comparing acid A to acid B, which one donates its H+ ion more easily.
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Therefore, one ranks the strength of strong acids according not to the Arrhenius definition (tendency to dissociate in aqueous solution) but according to the Bronsted-Lowry definition (tendency to transfer a proton to a given base in an acid-base reaction).
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Ka is defined for the reaction ... A larger equilibrium constant means that the reaction has a greater tendency to drive towards the products side (more H3O+ and A–, less HA). ... Another way of saying this is that the acid has a stronger tendency to donate its H+, which is the definition of a stronger acid...
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