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    I don't know how to do it....
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    (Original post by tmifan)
    I don't know how to do it....
    I imagine that you expected to extrapolate the properties of gallium from those of aluminium ...
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    (Original post by charco)
    I imagine that you expected to extrapolate the properties of gallium from those of aluminium ...
    nope still don't get it...
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    (Original post by tmifan)
    nope still don't get it...
    Aluminium forms salts that are highly acidic by hydrolysis due to the polarising power of the Al3+ ion.

    They are acidic enough to decompose carbonates to carbon dioxide.

    When they are neutralised by base aluminium hydroxide precipitates.

    This precipitate re-dissolves in excess base to form the negative aluminate ion, tetrahydroxydiaqua aluminium(III) ion
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    (Original post by charco)
    Aluminium forms salts that are highly acidic by hydrolysis due to the polarising power of the Al3+ ion.

    They are acidic enough to decompose carbonates to carbon dioxide.

    When they are neutralised by base aluminium hydroxide precipitates.

    This precipitate re-dissolves in excess base to form the negative aluminate ion, tetrahydroxydiaqua aluminium(III) ion
    Okay thank you!
    Just checked the textbook and turns out we haven't even done this yet... it was in the transition metals topic
    But i will be sure to come back to this question when we have!
 
 
 
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