The main acid in the stomach is hydrochloric acid (HCl). Which chemical equations show a reaction that occurs when someone takes an antacid? Check all that apply.HCl + NaOH NaCl + H2O2HCl + CaCO3 CaCl2 + CO2 + H2O2HCl + Mg(OH)2 MgCl2 + 2H2O6HCl + 2Al 2AlCl3 + 3H2HCl + NaHCO3 NaCl + H2O + CO2