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    During preparation of an ester, we add aqueous calcium chloride solution to remove ethanol. Why can it remove alcohol?
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    (Original post by mystreet091234)
    During preparation of an ester, we add aqueous calcium chloride solution to remove ethanol. Why can it remove alcohol?
    You sure it wasn't to remove water?
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    (Original post by mystreet091234)
    During preparation of an ester, we add aqueous calcium chloride solution to remove ethanol. Why can it remove alcohol?
    (Original post by charco)
    You sure it wasn't to remove water?
    Yeah, I'd think it was to remove water too.
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    Why would you want to remove ethanol during preparation of an ester? If you are going about it the carboxylic acid + alcohol route, alcohol is one of your reagents.

    Calcium chloride is used as a drying agent after the reaction to remove water from the solution.
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    (Original post by RME11)
    Why would you want to remove ethanol during preparation of an ester? If you are going about it the carboxylic acid + alcohol route, alcohol is one of your reagents.

    Calcium chloride is used as a drying agent after the reaction to remove water from the solution.
    In my a level notes I also have that you add sodium chloride solution or calcium chloride solution to remove alcohol. It is not to remove it as a reactant. This is after the reaction process and equilibrium is reached. The calcium chloride solution is needed to remove the alcohol leftover that is making the ester impure. I accept you can add solid calcium chloride to remove water but why is alcohol removed by calcium chloride solution?
 
 
 
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