Acid Ionizations

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					Acid Ionizations

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. 1) HCl Hydrochloric acid is a strong acid. Strong acids are strong electrolytes, which for most purposes are assumed to ionize completely in water. In this case HCl ionizes completely to hydrogen ions, H+ and chloride ions, Cl-. The reaction is better represented as hydrochloric acid donating an H+ to water, producing hydronium in H3O+ and chloride ion. The role of water in this reaction was not shown to simplify the animation. You can think of H+ as a shorthand representation of H3O+. 2) HF Hydrofluoric acid is a weak acid. Weak acids are weak electrolytes, which only ionize to a limited extent in water. At equilibrium a hydrofluoric acid solution contains mostly non-ionized acid molecules HF and a small amount of hydrogen ions H+ and the conjugate base ions F-. This reaction is better represented as hydrofluoric acid donating a proton to water producing hydronium H3O+ a fluoride ion. Remember that weak acids only partially ionize in water. The role of water in this reaction was not shown to simplify the animation. You can think of H+ as a shorthand representation of H3O+.


				
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Lingjuan Ma Lingjuan Ma
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