Ka and Kb applicable to ONLY weak acids/bases

[Narhayne Nacana 3B]

Hi ya'll! I was wondering if the Ka and Kb are only applicable to finding the equilibrium concentrations of the products and reactants of weak acids and bases because they don't completely disassociate?

If they are also applicable to strong bases and acids, how?

[William Huang 1K]

Ka and Kb still technically apply for strong acids and bases, its just that the values are so high than the reverse reaction is negligible and you don't really consider there to be an equilibrium, even though there is a very, very small amount of the reverse reaction in some strong acids and bases.

[Tyler_Kim_2G]

Adding on, strong acids almost completely dissociate, so you would expect a high hydronium ion concentration. If you were to calculate the Ka value([Products]/[Reactants]), it would be a high value. This would similarly apply to strong bases.