The reaction you provided is the reaction of lithium oxide (Li₂O) with water (H₂O) to produce lithium hydroxide (LiOH):

Li₂O (s) + H₂O (l) → 2LiOH (aq)

Here's a breakdown:

* Li₂O (s): Lithium oxide is a solid.

* H₂O (l): Water is a liquid.

* 2LiOH (aq): Lithium hydroxide is produced as an aqueous solution (dissolved in water).

In summary: The reaction produces two moles of lithium hydroxide in an aqueous solution.