A base is a substance that has the tendency to release OH- ions. These ions then attract protons to form water.
For example:
NaOH is a strong base which dissociates into Na+ and OH- ions.
NaOH → Na+ + OH-
The OH- ions can then grab the H+ ions from water, thereby reducing the hydrogen ion concentration and increasing the pH
Ans :
When a base is added to water, hydrogen ions decrease.
