Which equation represents a neutralization reaction?

O 2H2 + O2 → 2H20

o 2H202 → 2H2O + O2

HCI + KOH → KCI + H20

Answer: HCI + KOH → KCI + H20

Explanation:

HCI (aq) + KOH (aq) → KCI (aq) + H20 (l)

Acid + base → Salt + Water.

The above is a neutralization reaction in which an acid, aqeous HCl reacts completely with an appropriate amount of a base, aqueous KOH to produce salt, aqueous KCl and water, liquid H2O only.

This is a neutralization reaction since, the hydrogen ion, H+, from the HCl is neutralized by the hydroxide ion, OH-, from the KOH to form the water molecule, H2O and salt, KCl only.