HCl(aq) +H2O(l) → H3O+ (aq) + Cl− (aq) Notice that every mole of hydrochloric acid that ionizes produces 1 mole of hydronium cations and 1 mole of chloride anions. The entire reaction is all about dissociation and combination of ions. Answer link. H will leave its own electron to Cl ion and H gets attached to water to form H3O+, i.e., hydronium ion. The chemical equation is:Na2CO3 + 2 HCl = 2 NaCl + CO2 + H2O What is the dissociation equation for iron sulfide in water? It takes place in a scientific manner. (1)HCl(aq) H+(aq)+Cl−(aq) After successful dissociation of HClin water, the following reaction takes place: HCl+H2O H3O++Cl−. Hydrochloric Acid or HCl is a strong acid. Hydration is the process where ions become surrounded with water molecules. This means that the chemical equation that describes the ionization of hydrochloric acid will look like this. Sodium chloride dissolves in water The dissolution of sodium chloride can be represented by the following equation: NaCl (s) → Na + (aq) + Cl − (aq) HCl forms hydronium ions (H3O+) and Chloride ions (Cl-) some books simply show the dissociation as HCl --> H+ + Cl- **they omit the water in the equation. This is because it dissociates completely in water (the very definition of a strong acid/base) into H+ and Cl-.