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| W5.3
LOOKING FOR PATTERNS (3) |
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Ethanoic
acid is a little different:
Each molecule has one hydrogen atom attached to an oxygen
atom and three hydrogen atoms attached to a carbon atom.
Only the hydrogen attached to the oxygen atom is ‘replaced’,
but not the ones attached to carbon.
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In all of these reactions, water molecules are
needed to help to pull the hydrogen atoms away from
the acid molecules.
This is why acids only react like acids when
dissolved in water.
Water molecules cannot help to pull off hydrogen atoms
that are bonded to carbon atoms.
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| a
Science Enhancement Programme CD-ROM 2005 |
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user
guide |
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