What does formaldehyde, formic acid and silver ammonia solution react to produce?

1. Formaldehyde reacts with silver ammonia solution to form ammonium carbonate.

Ammonia, silver and water.

Reaction equations.

hcho+4ag(nh₃)₂oh =co(onh₄)₂6nh₃+4ag↓+2h₂o

2. Formic acid reacts with silver ammonia solution to form sodium carbonate.

Silver element, ammonia and water.

The reaction equation: HCOH + 2AG (NH) OH + 2NAoh = 2AG + NA CO +4NH +3H O

Properties of silver ammonia solution:

Silver ammonia solution is silver ammonia hydroxide, chemical formula: AG(NH) OH. The essence of silver hydroxide ammonia is actually silver hydroxide, and Ag(NH) OH] is actually agoh·2NH.

Silver diamine hydroxide is a complex.

It has weak oxidizing properties.

It is a strong alkali, corrosive, has the general properties of alkali, and is soluble in water and ethanol.

Fully ionized.

The silver ammonia solution reacts with the aldehyde group.

Formaldehyde is equivalent to two aldehyde groups, and CO and hydrogen on the left and right are each equivalent to one aldehyde group.

There is only one aldehyde group in formic acid, COOH and one hydrogen on the left are equivalent to one aldehyde group.

hcho + 4 ag(nh3)2oh —-nh4)2co3 + 4 ag↓ +6 nh3↑ +2 h2o

hcooh+2ag(nh3)2oh→co2↑+4nh3↑+2ag↓+2h2o

Silver mirror reaction, there are elemental silver production. The presence of aldehyde groups can be tested by the silver mirror reaction.

hcho + 4 ag(nh3)2oh (△nh4)2co3 + 4 ag↓ +6 nh3↑ +2 h2o

hcooh+2ag(nh3)2oh(△)co2↑+4nh3↑+2ag↓+2h2o

Formaldehyde, formic acid and silver ammonia solutions are fully reacted to produce (NH4)2CO3, AG, NH3.

The reaction equation of formaldehyde and silver ammonia solution is: HCO+4AG(NH3)2OH- NH4)2CO3+4AG+6NH3+2H2O.

Expansion: 1Experimental phenomenon: The reaction of formaldehyde and silver ammonia solution is called silver mirror reaction, in this reaction, the silver compound is reduced to metallic silver, and a layer of bright metal tung cover silver can be observed attached to the inner wall of the experimental container.

2.In the actual experiment of the reaction of formaldehyde and silver ammonia solution, there may be the production of gas carbon dioxide, because the obtained carbon dioxide does not have time to react with ammonia. When the silver ammonia solution is insufficient, it may also be difficult to get ammonium formate, and the chemical reaction equation is:

4ag(nh3)2oh+hcho---co2+4ag+8nh3+3h2o。

If it is a small amount of formaldehyde and a sufficient amount of ammonia, then formaldehyde is equivalent to two aldehyde groups, which can react with 4 times the silver ammonia solution to produce ammonium carbonate, 6 times ammonia, 4 times the silver element, and 2 times the water.

If there is an aldehyde group in the molecule, then react with 2 times the ag(NH3)2OH to produce the product which can be memorized, 4 is the corner mark in the -CoonH4 in the product is the metrological coefficient of the product molecule, 3NH3, 2AG, 1H2O

The equation is: r—cho+2ag(nh3)2oh ==r—coonh4+3nh3+2ag +1h2o

Reaction of formaldehyde: HCO+4AG(NH3)2OH ==CO(ONH4)2+6NH3+4AG+2H2O

or written as (NH4)2CO3 ammonium carbonate.