self-ionization of water
autoionization of water

This is in part due to the limited self-ionization of water.

K is the constant for Self-ionization of water.

For example water undergoes autoprotolysis in the self-ionization of water reaction.

This is due to the self-ionization of water and is independent of the presence or absence of buffering agents.

This special case of water reacting with water to produce hydronium (and hydroxide) ions is commonly known as the self-ionization of water.

Water forms protons by the process of self-ionization of water In an illustrative case, acids accelerate (catalyse) the hydrolysis of esters:

The bifluoride ion also contributes to the unusually high auto-protolysis constant of liquid anhydrous hydrogen fluoride, which autodissociates in a manner similar to the self-ionization of water.

The dissociation constant for this dissociation is commonly symbolized as K and has a value of about 10 at 25 C; see "Water (data page)" and "Self-ionization of water" for more information.

The self-ionization of water (also autoionization of water, and autodissociation of water) is an ionization reaction in pure water or an aqueous solution, in which a water molecule, HO, loses the nucleus of one of its hydrogen atoms to become a hydroxide ion, OH.