Write some instructions for a swimming pool attendent explaining why chlorine compounds are added to the pool!?
- Anonymous8 years agoFavorite Answer
Calcium Hypochlorite (Ca(ClO)2) or sometimes sodium hypochlorite (NaClO) is added to swimming pools, because it reacts with the H2O in the pool, following the equation:
ClO- + H2O --(equilibrium)--> HOCl + OH- + Cl-
*note: the calcium in Ca(ClO)2 is left out because it acts as a spectator ion*
And from this reaction, the hypochlorous acid (HOCl) reacts further with the water, partially ionising in the water to make hydronium ions and more hypochlorite ions following the equation:
HOCl + H2O ---(equilibrium)--> H3O(+) + OCl-
These ions (hypochlorite and hydronium) are effective at killing disease-causing bacteria. Chlorine (Cl2) is a very volatile element and is actually more effective at killing bacteria, but it is also toxic and harmful to the eyes, nose, mouth and throat. This is why Chlorine-containing compounds are added to most pools instead of using the actual Chlorine gas. As long as the pH of the pool water is kept above 4 (which it will be considering pool water is around pH 7), there will be virtually no Chlorine gas produced, making this a safe, public friendly way to keep algae and bacteria from growing in pools.
I hope this helps :)Source(s): Chemistry textbook
- 8 years ago
um to keep it clean? go google the use of chlorine and youll get your answerSource(s): MY BRAIN!