What is the color of the mixed solution of ferrous nitrate and copper nitrate

Copper ions are blue and ferrous ions are light green, and when the two are mixed, the mass and volume of the solution are unknown, so it can be judged according to the mass of copper ions and ferrous ions contained.

Calculation method: Let the mass of copper nitrate be m copper nitrate, and the mass of ferrous nitrate be m ferrous nitrate (note: this mass is the solute mass, the mass of Cu2+ is (1 3) m copper nitrate, and the mass of Fe2+ is (14 45) m ferrous nitrate. ）

If (1 3) m copper nitrate (14 45) m ferrous nitrate, the solution is blue;

If (1 3) m copper nitrate (14 45) m ferrous nitrate, the solution is light green.

PS: Ferrous nitrate is light green, copper nitrate is blue.

Ferrous nitrate is a pale green orthorhombic crystal system with sheet crystals. Melting point. Soluble in water.

The aqueous solution is heated to turn into basic ferric nitrate. When cold, it is wet and stable. It is prepared by reducing the iron nitrate solution with silver.

Iron filings can also be dissolved in dilute nitric acid below the density at low temperature, and crystallized by cooling. Prepared by centrifugal separation. It can also be prepared by metathesis reaction of ferrous sulfate and barium nitrate.

It is used in the manufacture of ferric nitrate and other iron salts of nine hydrate.

Copper nitrate blue orthorhombic flake crystals. There is deliquescent. 170 points liberate oxygen.

Soluble in water and ethanol, almost insoluble in ethyl acetate. The pH of the aqueous solution is. Relative density.

Melting point. It is oxidizing, and combustion occurs when it is heated, hit, and rubbed with carbon powder, sulfur or other flammable substances**. Low toxicity, half lethal dose (rat, oral) 940mg kg.

Copper ions are blue, ferrous ions are light green, and when the two are mixed, the blue ones will mask the light green, so the solution appears blue.

BuildCopper nitrate, ferric nitrate, water, andA grip of tardigrade nitric oxide。Nitrate is strongly oxidizing under acidic conditions.

It can oxidize copper oxygen to bivalent and ferrous iron to trivalent. There is nitrate ionized by ferrous nitrate in the solution, and dilute sulfuric acid is added to ionize hydrogen ions, which is equivalent to the presence of dilute nitric acid in the solution that can react with copper and ferrous ions.

Therefore, dilute nitric acid reacts with copper to produce copper nitrate, water and oxygen nitrine

3Cu + 8Hno3 (dilute) = 3Cu (NO3) 2 + 2No + 4H2O At the same time, dilute nitric acid reacts with ferrous nitrate to produce ferric nitrate, water and nitric oxide:

3Fe(NO3)2+4HNO3 (dilute) = 3Fe(NO3)3+NO+2H2O

Ferric nitrate (chemical formula Fe(NO3)3, formula amount, its nonahydrate (mr = is a colorless to dark purple deliquescent crystal, easy to deliquescent, melting point, boiling point 125 (decomposition), relative density water = 1), relative molecular weight is. Soluble in water, ethanol, acetone, slightly soluble in concentrated nitric acid. It is prepared by the reaction of iron filings or iron oxide with concentrated nitric acid, and is used as a mordant, copper colorant, and used for reagents and medicines.

The substance is harmful to the environment, and special attention should be paid to the pollution of water bodies.

Because under normal pH conditions, hydrated Fe3+ ions are easily hydrolyzed, and in hydroxylides and hydroxyl oxides such as Fe(OH)2+, OH- and O2- are used as ligands, and their coordination field effect is very strong, which changes the 3D energy level of Fe3+, which is yellow and yellow-brown, and also makes the solution yellow, and after adding nitric acid, the hydrolysis of iron ions is reduced, and the solution becomes colorless.

It should be a reddish-brown trivalent iron solution.

This solution is blue.

According to today's headlines, copper nitrate solution is a blue liquid, and this color is caused by the copper ions in it, and the copper nitrate solution is usually formed by nitric acid and copper powder or copper flakes. In this process, copper is oxidized into copper ions, which are dissolved in water to form a dark blue solution. Copper nitrate is a highly corrosive chemical and needs to be handled safely.

Copper nitrate is an important chemical reagent, often used in electroplating, simplified chemical analysis, pigment preparation and other fields, in electroplating, copper nitrate is used as an electrolyte for the deposition of metal copper, in order to form a protective copper layer on the metal surface. In chemical analysis, copper nitrate is often used as an analytical reagent for copper to detect copper content in food, environment and pharmaceuticals, and copper nitrate is also a raw material for the preparation of many pigments, such as blue nail polish.

The copper nitrate solution is blue, but in the presence of nitric acid it is green.

Blue is the color of [cu(h o)]. The [cu(h o)] formed when there is an excess of water is also blue.

The solution contains copper ions, which are not necessarily blue. For example, in a concentrated CuCl solution, [Cu(HO)] is blue and [CuCl] is green, and the mixed color when they coexist is green, so the concentrated CuCl solution is green.

The copper nitrate solution is blue, but in the presence of nitric acid it is green.

Ferric nitrate is indeed a colorless or lavender monoclinic crystal.

The real Fe3+ ion and Hexahydrate Fe3+ ion are light purple, but because under normal pH conditions, the hydrated Fe3+ ion is very easy to hydrolyze, and the products of partial hydrolysis are OH and O2- in hydroxylides such as Fe(OH)2+ and hydroxyl oxides as ligands, the coordination field effect is very strong, which changes the 3D energy level of Fe3+, which is yellow and yellowish-brown, and also makes the solution present yellow Fe(NO3)3 crystals, Fe3+From NO3- as a ligand, without H2O or OH- as a ligand, Fe3+ will not be hydrolyzed, moreover, the coordination field effect of NO3- is very weak, and has no effect on the 3D energy level of Fe3+Therefore, Fe3+ presents its original color in Fe(NO3)3 crystals, that is, light purple Of course, its dilute solution is light yellow, if it is a concentrated solution, concentrated HNo3 is added to inhibit its hydrolysis.

Due to NO3- involvement, the color will be close to lavender.

Because under normal pH conditions, hydrated Fe3+ ions are easily hydrolyzed, and in hydroxylides and hydroxyl oxides such as Fe(OH)2+, OH- and O2- are used as ligands, and their coordination field effect is very strong, which changes the 3D energy level of Fe3+, which is yellow and yellow-brown, and also makes the solution yellow, and after adding nitric acid, the hydrolysis of iron ions is reduced, and the solution becomes colorless.

The color of ferrous ions in ferrous salts is light green;

The color of copper ions in copper salts is blue.

When ferrous ions are mixed with copper ions, the color fluctuates in the range from light green to blue because the mixing ratio of the two is not known.

When the concentration of copper ions is not much different from the concentration of ferrous ions, the light green color of ferrous ions is not obvious, so the result is still blue, and depending on the concentration of ferrous ions and copper ions, it is sometimes a bluish color.

In conclusion, when ferrous ions are combined with copper ions, the main color reaction is dominated by the blue color of copper ions.