system
Given the following post, respond as if you're commenting on Reddit:
human
What is the actual process in which base-cations increase the pH of a solution?

So pH is defined as the activity of hydrogen ions. I understand with an addition of OH- ions will increase pH, however, how exactly to dominant base cations (Ca2+, Mg2+, and K+) raise pH? I am assuming is has a lot to do with exchange capacity, however, an actual explanation of the process would help. Thank you.
gpt
The cation has little to no effect on the pH of hydroxide salt solutions.  In aqueous solution, the hydroxide creates an imbalance between free H^+ and free OH^(-), and due to the autoionization equilibrium constant of water ([H^(+)][OH^(-)]=1.0*10^(-14)), the concentration of H^+ naturally decreases.