Final answer:
When water combines with chlorine in the chlorine feed system, it forms hydrochloric acid, which is a highly corrosive strong mineral acid. It reacts with water to produce hydronium ions and chloride ions, making it a strong acid.
Step-by-step explanation:
When water combines with chlorine in the chlorine feed system, it forms hydrochloric acid. Hydrochloric acid is a corrosive, strong mineral acid that is highly pungent and completely dissociates in water. It reacts with water to produce hydronium ions (H3O+) and chloride ions (Cl-), making it a strong acid. Hydrochloric acid is commonly used in industrial processes and is also the preferred acid for determining the amount of bases in titration.