Final answer:
When an acid and a base are combined, they react to form water and a salt.
Step-by-step explanation:
When an acid and a base are combined, they react to form water and a salt. This reaction is called neutralization. The balanced chemical equation for this reaction is acid + base → water + salt.
For example, the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) can be written as:
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
In this reaction, HCl is the acid and NaOH is the base.
The products are NaCl (salt) and H2O (water).