Answer:
3.neutralization
Explanation:
HF + KOH → H₂O + KF
The reactants are acid, HF and base, KOH. The product is salt, KF and water.
Reactions in which acids reacts with bases to produce salts and water is known as a neutralization reaction.
An acid is a substance that produces hydroxonium ions in solutions. Bases on the other hand produces hydroxyl ions.