A vigorous reaction occurs, producing hydrogen gas and the specific alkali hydroxide.
The alkali metal hydroxides form white crystals that are hygroscopic and readily soluble in water, generating large amounts of heat upon dissolution.
The solubility increases down the column as the alkali metal ions become larger and the lattice enthalpies decrease.
[1] All alkali metal hydroxides are strong bases, meaning that they dissociate completely in solution to give OH− ions.
Similarly, potassium hydroxide is available as a solution used for cleaning terraces and other areas made out of wood.