Final answer:
The application of chlorine in dosages far in excess of the chlorine demand for disinfecting is known as chlorine overdose.
Step-by-step explanation:
The application of chlorine in dosages far in excess of the chlorine demand for disinfecting is known as chlorine overdose. When chlorine gas is mixed with water, it produces a strong oxidant called hypochlorous acid, which is commonly used for disinfection purposes. Chlorine gas, sodium hypochlorite, and calcium hypochlorite are all commonly used disinfectants that can be applied in excess to ensure effective disinfection.