Final answer:
The balanced equation for the reaction between zinc and hydrochloric acid is Zn + 2HCl → ZnCl₂ + 2H₂.
Step-by-step explanation:
The balanced equation for the reaction between zinc (Zn) and hydrochloric acid (HCl) is:
Zn + 2HCl → ZnCl₂ + 2H₂
In this reaction, one zinc atom combines with two hydrochloric acid molecules to produce one zinc chloride molecule and two hydrogen gas molecules.