Weak acids partially dissociate into ions, while strong acids completely dissociate, demonstrating the key difference in their behavior.
Weak acids only partially dissociate into ions when mixed with water, while strong acids completely dissociate into ions. For example, when HCl is dissolved in water, all HCl molecules separate into ions, making it a strong acid. On the other hand, weak acids like acetic acid only dissociate partially, showing a clear difference in behavior.
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