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are the carbonates that dissolve in water classed as alkalies? Watch

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    Are the carbonates that dissolve in water classed as alkalies? Do all alkalies have to release OH- ions?
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    (Original post by celina10)
    Are the carbonates that dissolve in water classed as alkalies? Do all alkalies have to release OH- ions?
    Do you mean hydroxides?? If so then yeah
    As far as I remember a lot of carbonates insoluble

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    (Original post by bad8oy)
    Do you mean hydroxides?? If so then yeah
    No I mean carbonates.

    (Original post by bad8oy)
    As far as I remember a lot of carbonates insoluble
    But would the ones that are soluble be classed as alkalies, as alkalies are soluble bases.
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    (Original post by celina10)
    anyone?
    I imagine so, yes.
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    (Original post by celina10)
    anyone?
    When carbonates dissolve in water they form hydroxides, so yes they'd be described as alkali

    CaCO3 + H20 ----> Ca(OH)2 + CO2 iirc
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    (Original post by bananarama2)
    I imagine so, yes.

    (Original post by Rump Steak)
    When carbonates dissolve in water they form hydroxides, so yes they'd be described as alkali

    CaCO3 + H20 ----> Ca(OH)2 + CO2 iirc
    Do all alkalies dissociate to form OH- ions?
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    (Original post by celina10)
    Do all alkalies dissociate to form OH- ions?
    Yeah


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    thanks
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    (Original post by celina10)
    Do all alkalies dissociate to form OH- ions?
    Most.
    Correct way to think of it is "all species which dissociate to form OH- ions are alkali"
    But not all alkalis dissociate to form OH- ions if that makes sense.
    (e.g. NH3 is alkali, but doesn't form OH- ions)
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    What the poster above said...

    An alkali is a proton acceptor, they can accept hydrogen ions from acids, they do not necessarily release OH- ions
 
 
 
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