Advanced Placement (AP) Chemistry Practice Exam 2026 – All-in-One Guide to Exam Success!

The main results of neutralizing an acid with a base are the formation of water and a salt. When an acid reacts with a base in a neutralization reaction, the acid donates protons (H⁺ ions), while the base donates hydroxide ions (OH⁻). This combination of H⁺ and OH⁻ ions results in the production of water (H₂O). In addition, the anion from the acid combines with the cation from the base to form a salt, which consists of the ionic compound produced in this reaction.

This process is fundamental to understanding acid-base chemistry and plays a crucial role in various applications, including titrations, buffer solutions, and various industrial processes. It is important to note that while heat may be generated during some neutralization reactions, the primary products are always water and a salt. Thus, the correct answer highlights the essential products of this chemical reaction.