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11.2- The Chemical Reactions Of The Halogens



Trends in oxidising ability

Halogens usually react by gaining electrons to become negative ions, with
a charge of -1. The makes the reactions REDOX; halogens are oxidising
agents and are themselves reduced. For example:

Cl2 + 2e- 2Cl-

The oxidising ability of the…

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The extraction of bromine from seawater

The oxidation of a halide by a halogen is the
basis of a method for extracting bromine
from seawater. Seawater contains small
amounts of bromide ions, which can be
oxidised by chlorine to produce bromine, as
in the reaction discussed before and shown
again…

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