A hydroxide alludes to the OH-polyatomic particle and is shaped when an oxygen makes a covalent bond with one hydrogen (be that as it may you would not see such particles free in nature as they would all the more presumably be in mixes).

Potassium hydroxide (KOH) is shaped when Potassium frames ionic bonds with OH-particles while Potassium Oxide (K2O) is framed when potassium shapes ionic bonds with the Oxide (O2-) particles.

Hydrochloric corrosive + Potassium Hydroxide - > Potassium Chloride + Water

i.e. HCl(aq) + KOH (aq) - > KCl (aq) + H2O (l)

This response is a balance response and happens when a corrosive (HCl) responds with a base (KOH).

HCl + KOH >> KCl + H2O
acid + base >> salt + water
KOH is potassium hydroxide
K2O is potassium oxide

Balanced equation:
HCl + KOH = KCl + H2O
Reaction type: double replacement

Reaction Stoichiometry
Compound Coefficient Molar Mass
HCl 1 36.46094

KOH 1 56.10564

KCl 1 74.5513

H2O 1 18.01528