Question:
How does chlorine kill bacteria, i.e. in a pool?
Replies:
Chlorine gas, Cl2, reacts with water to form OCl-, hypochlorite ion.
Cl2 (g) + H2O (l) -----> HCl (aq) + HOCl (aq)
OCl- is the active ingredient in bleach, by the way. This ion is a
strong oxidizer and will oxidize certain chemicals in the bacteria that
give them life.
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