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The Periodic Table
The Halogens - Reaction with Hydrogen.
How do the Halogens React with Hydrogen?
The halogens will react with hydrogen to form hydrogen halides.
How does Chlorine React with Hydrogen?
Hydrogen will react with chlorine to form hydrogen chloride.
hydrogen + chlorine hydrogen chloride.
H2(g) + Cl2(g) 2HCl(g)
For the properties of HCl(g) see the test
For the structure of HCl(g) see the structure of HCl.
Hydrogen chloride is
soluble in water.
For hydrogen chloride to be dissolved safely in water
an inverted funnel is used.
Hydrogen chloride dissolves to form hydrochloric acid.
chloride + water hydroxonium ion + chloride ion.
HCl(g) + H2O(l) H3O+(aq) + Cl-(aq)
The hydroxonium ion, H3O+, (often written just as
H+, hydrogen ion)
is an acid in water - see acids.
H+ + Cl- in water is hydrochloric acid.
All the hydrogen halides dissolved in water make acidic solutions
because they all produce hydrogen ions.
bromide + water hydroxonium ion + bromide ion.
HBr(g) + H2O(l) H3O+(aq) + Br-(aq)
Links The Halogens Revision Questions
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