The salt produced from KOH (potassium hydroxide) and pentanoic acid is potassium pentanoate.

Here's the reaction:

KOH (aq) + CH₃(CH₂)₃COOH (aq) → CH₃(CH₂)₃COOK (aq) + H₂O (l)

* KOH is a strong base.

* Pentanoic acid (CH₃(CH₂)₃COOH) is a weak acid.

* The reaction is a neutralization reaction, resulting in the formation of a salt (potassium pentanoate) and water.