Final answer:
The acid-base reaction is represented by the balanced chemical equation KHC8H4O4(aq) + NaOH(aq) -> KNaC8H4O4(aq) + H2O(l).
Step-by-step explanation:
The acid-base reaction that occurred in the titration of potassium hydrogen phthalate (KHP) with sodium hydroxide (NaOH) can be represented by the balanced chemical equation:
KHC8H4O4(aq) + NaOH(aq) → KNaC8H4O4(aq) + H2O(l)
In this reaction, KHP, which is an acid, reacts with NaOH, which is a base, to form a salt (KNaC8H4O4) and water (H2O).