Given solutions of glycerin and glucose, how to recognize these substances empirically?
| November 28, 2020 | education
Glycerin is a trihydric alcohol, glucose is an aldehyde alcohol, but it is also a polyhydric alcohol, because has 5 hydroxo groups. The best way to tell the difference is to add an ammoniacal solution of silver oxide [Ag (NH3) 2] OH while heating (required). This is a qualitative reaction to aldehydes. A film of silver is formed, which will precipitate and sample. mirror surface.
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