Chlorine and all that jazz (:

What is chlorine used for?

• properties
• oxidisng abilities.
  

Chlorine is used in water to kill off unwanted bacteria.

Cl2(g) + H2O(l) => HClO(aq) + HCl(aq)

This ONLY happens in the sun/UV

Chlorine = swimming pool outdoors = pH change.

reaction w/ alkali ...
Cl2 + 2NaOH => NaClO + NaCl + H2O

Sodium chloride = bleach.

The agents, oxidisng and reducing, are the opposite of what happens.