Final answer:
The equation representing a neutralization reaction is HCl + KOH → KCl + H2O, which showcases the combination of an acid and a base to form water and a salt.
Step-by-step explanation:
The equation that represents a neutralization reaction is:
HCl + KOH → KCl + H2O.
Neutralization reactions occur when an acid and a base react to form water and a salt. In such reactions, a hydrogen ion (proton) from the acid combines with the hydroxide ion from the base, resulting in the formation of water. This process can also be represented as a net ionic equation where the hydrogen ion from the acid and the hydroxide ion from the base combine to form water, while the remaining ions form a salt.