Lithium chloride (LiCl) and magnesium hydroxide (Mg(OH)₂) will react to form lithium hydroxide (LiOH) and magnesium chloride (MgCl₂) .

Here's the balanced chemical equation:

2 LiCl + Mg(OH)₂ → 2 LiOH + MgCl₂

This reaction is an example of a double displacement reaction, where the cations and anions of two reactants switch partners.