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Chlorine.

Chlorine gas is bubbled in to water , where it disproportionates

Disproportionation is a chemical term , where molecule simultaneously oxidises and reduces. Thereby its oxidation numbers change from zero (Cl2) to Cl^- ( -1) & Cl^+ ( +1(

Chlorine gas forms the chloride ions Cl^- & Cl^+

These ions react with a water molecule to form HCl + HClO

H2O + Cl2 = HCl + HClO

HCl is hydrochloric acid which is a bactericide and HClO form the 'bleach anion (ClO^-) which is also a bactericide.

These two substances together kill germs (bactericide).

NB Only sufficient chlorine is bubbled into water , as enough to act as the bactericide. You do NOT taste these chemicals when drinking water as the concentration is very low.

NNB All water supplied by a public suppliers must do this, otherwise there would be severe illness, such as Typhoid, Cholera, Dysentery.

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lenpollock

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6mo ago
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