The solubility of a substance depends on the like-dissolves-like rule, for most substances. According to this rule, polar substances dissolve other polar substances whereas non-polar substances dissolve other nonpolar substances. Since potassium hydroxide is a polar substance, it is dissolvable in other polar substances like water, ethanol, methanol, etc., irrespective of whether they are organic or inorganic. In fact, much heat is produced when KOH is dissolved in water or alcohol.