K²O+H²O

K2O + H2O refers to the reaction between potassium oxide (K2O) and water (H2O). When K2O reacts with water, it undergoes a hydrolysis reaction, which can be represented by the chemical equation:

K2O + H2O -> 2 KOH

In this reaction, the potassium oxide reacts with water to produce potassium hydroxide (KOH).