The balanced chemical equation for the reaction between potassium chlorate $KCLO3$ and hydrochloric acid $HCl$ is:

2 KCLO3 + 6 HCl → 2 KCL + 3 Cl2 + 3 H2O

This reaction forms potassium chloride $KCl$, chlorine gas $Cl2$, and water $H2O$.