The image shows a chemical reaction:
\[ 2HCl + KClO_3 \rightarrow KCl + H_2O + Cl_2 \]
This is a redox reaction where hydrochloric acid (HCl) reacts with potassium chlorate (KClO3) to produce potassium chloride (KCl), water (H2O), and chlorine gas (Cl2).
Answer: The reaction is between hydrochloric acid and potassium chlorate, producing potassium chloride, water, and chlorine gas.