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An acids strength, by one definition, is dependent upon the number of hydrogen ions produced in solution. A strong acid that is 100% ionized therefore would potentially have more hydrogen ions in solution than an acid that was only 50% ionized. This assumes that they are both similar in their hydrogen content.

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15y ago
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13y ago

They do, only under the theoretical infinite dilution condition. Otherwise, nothing occurs 100% in chemistry. The problem with total ionization/dissociation (and more so with higher concentrations) is that there occurs a common ion effect in the solution itself. Too much H+ and A- (where HA is the acid) accumulate in the solution, and so when equilibrium with minimum energy state is established, you have highly, but never completely ionized acid or base. On increasing the temperature, it will ionize more.

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Q: Why is an acid strong if it is fully ionised?
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