Chemistry (Ionic Equilibria)

When a WEAK acid can be said to be weak, and when a WEAK acid can be said to be strong?

I only know the difference between weak acids and strong acids, but i don't know that even weak acids can be classified as weak and strong. Plz help

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asked by John
  1. We use the terms weak and strong sometimes inappropriately.
    You're right. Weak acids are those that don't ionize 100%.
    Strong acids are those that ionize 100%
    I think in the context of your question that a strong weak acid means a concentration solution of a weak acid. For example, we can have glacial acetic acid that is almost 100% stuff right out of the bottle but acetic acid STILL is a weak acid. But that glacial acetic acid could still do harm if dumped on you. In the same vein, we can have weak solutions of a strong acid; i.e., a 1E-5M solution of HCl.

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