conjugate seesaw

[Rhea Shah 2F]

Could someone explain the reasoning behind the conjugate seesaw?

[JamieVu_2C]

[H3O+][OH-] = 10^-14
For this equation if the concentration of H3O+ is large, then the concentration of OH- must be low since their product is always a constant at 10^-14, and vice versa.

pKa + pKb = pKw
Similarly, if pKa is large, then pKb is low since their sum always equals pKw, which is 14, and vice versa for pKb.

[Eugene Chung 3F]

To give an example, When HCl (strong acid) dissociate in aqueous solution, than the conjugate base is Cl-, an ion produced as a result of HCl's dissociation. It can technically accept protons to produce acid in reverse direction but because HCl is strong, and dissociates completely, the reaction only occurs forward. So, strong acid produce weaker conjugate base that is unlikely to accept proton and produce acid again. (and vice versa for strong base).

[Rosa Munoz 2E]

Since it is equal to a constant, if one goes down, the other must go up.

[Shail Avasthi 2C]

Ka x Kb = Kw
Kw is a constant (10^-14)
If Ka is high for a strong acid, Kb must therefore be low because their product is equal to a constant. And vice versa: if Kb is high for a strong base, then Ka must therefore be low.