engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Water Treatment Disinfection
When chlorine is dissolved in water, it reacts to form hypochlorous acid and hypochlorite ions. At pH < 5, chlorine exists in water as
1
Elemental or molecular chlorine
2
Remains in the form of hypochlorous acid
3
Remains in the form of hypochlorite ions
4
Remains in the form of both hypochlorous acid and hypochlorite ions