Science Common Sense

1767 - What is the equilibrium state when the water's dissociation rate equals its recombination rate at a constant temperature.

The equilibrium state you're referring to is called the "ionization equilibrium of water" or "acidic equilibrium of water". In this state, water (H2O) keeps breaking into hydrogen ions (H+) and hydroxide ions (OH-) at the same rate that these ions come back together to form water.

It's like when you're in a seesaw with the same number of people getting on and off from both sides. At this point, it's balanced and stays still.

This balanced state is what we call the equilibrium state.