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How could I separate a mixture of salt and sugar?

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police | eNotes Newbie

Posted June 13, 2009 at 9:04 AM via web

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How could I separate a mixture of salt and sugar?

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cambtone | College Teacher | (Level 2) Adjunct Educator

Posted June 15, 2009 at 4:05 AM (Answer #1)

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If it is a dry mixture, then you can use 100% alcohol which will dissolve the sugar, but not the salt (which can be filtered off).  The alcohol has to be evaporated to yield the sugar.

If they are mixed in water, then you could try reducing the volume by boiling, but not too long in case one or other comes out of solution.  Addition of an excess of acetone to the solution shouldl precipitate the salt, which can be filtered off.  Evaporation of the acetone will yield the sugar.  An alternative is to mix vigorously with toluene, which will dissolve the sugar but not the salt, and separate the layers using a separating funnel (as the toluene does not mix with water).

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drjjpdc | Middle School Teacher | (Level 2) Adjunct Educator

Posted June 13, 2009 at 10:50 AM (Answer #2)

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This is a very easy answer. Sugar is soluble in alcohols while salt is not. Simply mix the two in alcohol and filter the solution to get the salt. Then evaporate the alcohol sugar mixture and you will be left with the sugar. Done.

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wescarlyon337 | Student, Grade 10 | Salutatorian

Posted January 30, 2013 at 4:27 PM (Answer #3)

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Mix the suger and in alcohol and filter the solution to get the salt. Then evaporate the alcohol sugar mixture and you will be left with the sugar.

Hope this helps 

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yamaguchityler | Student, Undergraduate | (Level 2) Assistant Educator

Posted January 22, 2014 at 6:09 PM (Answer #4)

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Separating a mixture of salt and sugar is actually quite easy. Athough sugar is soluble in any type of alcohol, salt on the other hand is not. If you want to separate the two, first mix both salt and sugar in any type of alcoholic beverage. Once you do that, if you now filter the beverage, you will be able to obtain the salt. However, since the sugar is soluble in alcohol, you need to obtain it in a different manner.

Once you have filtered the beverage and gotten the salt, evaporating the alcohol and sugar mixture will leave you with the sugar. After both filtering then evaporating, you will be left with the separation of sugar and salt that you started with.

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Yojana_Thapa | Student, Grade 10 | Valedictorian

Posted January 25, 2014 at 5:40 PM (Answer #5)

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You have to mix the salt and water in any alcohol, than you filter , once you do that you will get the salt! Than you use the method evapoaration, your salt and sugar will separate!

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parama9000 | Student, Grade 11 | Valedictorian

Posted January 30, 2014 at 6:37 AM (Answer #6)

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Mix the salt and water with any alcohol and through filtration, the salt and sugar can be retrieved. Then use evaporation to dryness, and Voila, you have it!

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Jyotsana | Student, Grade 10 | Valedictorian

Posted February 22, 2014 at 11:47 PM (Answer #7)

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To separate the salt and sugar, first you have mix the salt and water in the alcohol through filtration and then you use evaporation to separate the salt and sugar.

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nicole8923 | Student, Grade 10 | Salutatorian

Posted February 28, 2014 at 2:58 PM (Answer #8)

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Though Filtration!

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Chantelm | Student, Grade 10 | Salutatorian

Posted February 28, 2014 at 8:53 PM (Answer #9)

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You can separate a mixture of Salt and sugar by mixing it with alcohol which then yields salt and you filter the remaining solution to get the sugar.

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jess1999 | TA , Grade 9 | Valedictorian

Posted June 17, 2014 at 6:09 AM (Answer #10)

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Sugar is soluble in organic matter such as alcohol. Salt itself is insoluble to alcohol. In order to separate sugar and salt , you can add alcohol to the mixture. Later, filter out the salt . Finally, evaporate the the alcohol and the only thing remaining of the mixture would be the sugar.

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