The chemical equation is K2O + CuO -> 2K2CuO2.

The above chemical equation shows the chemical reaction between K₂O (Potassium oxide) and CuO (Copper(II) oxide) to produce K₂CuO₂ (Potassium copper oxide). In this reaction, each mole of K₂O reacts with a mole of CuO to produce two moles of K₂CuO₂.

Reaction conditions: This reaction requires high temperature and appropriate pressure to occur.

Reaction process: In this process, K₂O and CuO react with each other to form K₂CuO₂. Each mole of K₂O reacts with a mole of CuO to produce two moles of K₂CuO₂. This reaction is a combination reaction, which means two or more reactants combine with each other to form a product.

Phenomena: During the reaction process, a temperature increase may be observed. The reaction product, K₂CuO₂, appears as a blue solid.