what are the industrial uses of tollen's test?

Question

pls.help me...i really nid to know it thanks!!?

i'm looking for the INDUSTRIAL uses of tollen's test... pls help me...thanks!!!

Answer 1

The industrial uses of Tollen's test :
-The diaminesilver(I) complex is an oxidizing agent, which is itself reduced to silver metal, which in a clean glass reaction vessel forms a "silver mirror". This feature is used as a test for aldehydes, which are oxidized to carboxylic acids.

-Once it has been identified that there is a carbonyl group on the organic molecule using 2,4-dinitrophenylhydrazine (also known as Brady's reagent or 2,4-DNPH), Tollens' reagent can be used to ascertain whether the compound is a ketone or an aldehyde. When adding the aldehyde or ketone to Tollens' reagent, put test tube in a warm water bath.

-If the reactant under test is an aldehyde, Tollens' test results in a silver mirror. If there is no reaction then the organic substance is a ketone, as they can cannot be oxidized, due to the position of the O atom (there is no available hydrogen atom that can be oxidised).

-Tollens' reagent is also a test for alkynes with a triple bond in the 1-position. A yellow precipitate of silver carbide is formed in this case.

-Tollens' Test for Reducing Sugars
In this experiment, silver-plate inside of an Erlenmeyer flask by reducing silver(I) to silver metal with dextrose, a reducing sugar.
Materials
silver nitrate (4 g, brown glass vial)
dextrose (8 g, clear glass vial)
conc. ammonium hydroxide (~ 10mL, small plastic bottle)
deionized water
125 mL erlenmeyer flask
brand new 125mL erlenmeyer flask
pasteur pipet with bulb
crystallizing dish (filled with hot water)
Procedure
Dissolve the sugar in 20 mL water in the 125 mL erlenmeyer flask. Warm the flask in the hot water to speed up the process. Meanwhile, dissolve the silver nitrate in 70 mL water in the brand new 125 mL erlenmeyer flask. Then, while swirling the flask, add ammonium hydroxide to the solution using the pipette. A brown precipitate will appear and then disappear as you add more ammonium hydroxide. Titrate to the point where it disappears then add a few more drops. Pour the dextrose solution into the silver nitrate solution and swirl the contents. Place in the dish of hot water and allow it to sit undisturbed for at least 10 minutes. Usually, you
can go on to the next demo then come back and examine the flask later. Pour the solution down the drain and rinse the flask well with water before passing it around the class.
.
Safety/Disposal
If the silver nitrate/ammonium hydroxide solution sits for a few days, it forms silver nitride. These crystals explode when jarred or touched. Make up the solution fresh each time
and rinse waste down the drain with copious amounts of water. Silver nitrate is poisonous by ingestion, and it stains your skin brown, so wear gloves. Ammonia is caustic and could burn skin and nasal passages. The fumes are very strong, so try to keep the bottle capped as often as
possible during use.

Answer 2

Tollen's test is not used industrially. Tollen's reagent, ammoniacal silver nitrate, is used to deposit silver onto glass to make mirrored surfaces. This is not so common anymore but will still be used for specialised applications and restorations.

Answer 3

Tollen's test is for aldehydes and ketones. It uses Tollen's reagent and forms a silver mirror to see.

Answer 4

There is no industrial use - it is a qualitative organic chemistry test for the identification of aldehydes.

Answer 5

Detection of aldehydic groups.

Answer 6

You should read for yourself... the best way to know is by goin to your chemistry textbook