Strong vs. Weak Acids

[Janice Park 1E]

Just as a clarification, if the concentration of H3O+ is greater than 10^-3, or the pH is less than 3, then it is considered a strong acid?
Alternatively, if the concentration of OH- is greater than 10^-3, or the pOH is less than 3, then it is considered a strong base?

[Brian Chhoy 4I]

Im not to sure about the exact concentration of hydronium or hydroxide, but strong acids/bases have pKa/pKb values that are greater than 10^3, and at that amount you can be sure that they fully dissociate.

[Philip Lee 1L]

Instead of looking at concentrations, I think you need to look at equilibrium constants to determine whether or not an acid or base is considered strong/weak. For example, any acid with a K_a > 10³ is considered to be a strong acid. For bases, you need to consider K_b values.

[Celine Cheng 1H]

Also, there are lists of common strong acids/bases that you can find online!
Here's one that I really like: http://www.chemistry.pomona.edu/chemist ... dbaset.htm