What substance can be used to distinguish between aqueous solutions of glycerin and ethanol?
| February 23, 2021 | education
It is possible to distinguish an aqueous solution of glycerol from an aqueous solution of ethanol by means of their reaction with copper (II) hydroxide. This reaction will be qualitative, it is also applicable to the determination of other polyhydric alcohols (contain more than one OH group). Mixing glycerin with copper (II) hydroxide (blue precipitate) will result in a blue solution. As a result of mixing ethanol with copper (II) hydroxide, the blue precipitate will not dissolve, because ethanol is a monohydric alcohol.
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