Question

Выданы пробирки с растворами :а)глицерина,б)альдегида,в)глюкозы.При помощи одних и тех же реактивов определите каждое вещество.

Answer 1

со всеми проводим реакцию серебрянного зеркала
отсеиваем таким образом глицерин

потом с оставшимися двумя проводим реакцию с гидроксидом меди
между глюкозой и гидроксидом реакция идет, а с альдегидом нет 

Answer 2

Identifying Substances in Test Tubes

To identify the substances in the test tubes using the same reagents, we can use the following information from the search results:

a) Glycerin: Glycerin can be identified by its reaction with certain reagents. It reacts with potassium permanganate to produce a color change. The reaction is as follows: ``` 2. : ) ; ) . , . . 3. - , - - . , . 4. : ) ; ) . . 5. : ) ; ) ; ) . . 6. , , - . , . 7. : ) ; ) . , . ```

b) Aldehyde: Aldehydes can be identified by their reaction with Tollens' reagent, also known as silver mirror test. The reaction involves the reduction of silver ions to metallic silver. The reaction is as follows: ``` , ,, , , , ```

c) Glucose: Glucose can be identified by its reaction with Benedict's solution, which forms a red precipitate. The reaction is as follows: ``` , , , , ```

By using the reactions mentioned above, we can identify each substance in the test tubes.