Strong and Weak acids and bases

[Lizbeth Crisanto 3D]

How can we tell when a compound is a strong acid/base or weak acid/base?

[Alex FreeWolf 2E]

Most acids/bases are weak as most do not dissociate fully into ions in a solution.
A strong acid/base dissociates fully into ions in a solution. I would recommend memorizing the list of strong acids/bases given and then assuming the rest are not strong. Even if an acid/based ionizes 99% in a solution it is still classified as a "weak acid/base"

[Michelle_Duong_3H]

Hello,

Inorganic compounds tend to be strong acids and bases. Organic compounds tend to make weak acids. Bases that contain the element nitrogen tend to be weak.

When reacting with water, metal oxides form strong bases while nonmetal oxides often form strong acids.

Relatively, molecules that have longer bond lengths are stronger acids. Additionally, the acid is stronger if the resulting anion of the acid is stabilized by resonance and/or stabilized by electron-withdrawing atoms (which delocalize the negative charge).

Hope this helps!

[Ryan Blaydon 1K]

Also something that I learned in high school for acids is that when an acid has 2 more total Oxygen atoms (Os) than Hydrogen atoms (Hs) then it is considered a strong acid. This goes on top of the other strong acids such as HCl, HBr, and HI.