In high school chemistry, find the equation for the conversion of ferric and ferric elements into ea

To change trivalent to bivalent, only a reducing agent needs to be added.

For example: Fe + 2Fe3+ = 3Fe2+

2fe3+ +cu = 2fe2+ +cu2+2fe3++2i-=i2+ 2fe2+

2fe3++ s2-=s+ 2fe2+

Oxidants should be added to change from bivalent to trivalent: such as:

2fe2+ +cl2 = 2fe3++ 2cl-2fe2+ +h2o2+2h+=2fe3+ +h2o5fe2＋＋mno4－＋8h＋=5fe3＋＋mn2＋＋4h2o

Trivalent to bivalent only need to add reducing agent, such as: Fe + 2FeCl3 = 3FeCl2 2FeCl3 + Cu = 2FeCl2+ +CuCl2+ Divalent to Trivalent to add oxidant: such as:

2fecl2+cl2 = 2fecl3

Divalent iron plus oxidant becomes trivalent, such as potassium permanganate.

Trivalent is directly added to the iron element to become bivalent.

The simplest is that the trivalent iron ions react with the Fe element to form the positive divalent iron ions.

To change trivalent to bivalent, only a reducing agent needs to be added.

For example: Fe + 2Fe3+ = 3Fe2+

2fe3+ +cu = 2fe2+ +cu2+2fe3++2i-=i2+ 2fe2+

2fe3++ s2-=s+ 2fe2+

Oxidants should be added to change from bivalent to trivalent: such as:

2Fe2+ +Cl2 = 2Fe3++ 2Cl-2Fe2+ +H2O2+2H+=2Fe3+ +H2O5Fe2 MnO4 8H =5Fe3 Mn2 4H2O

The chemical equation for the conversion of ferric iron to ferric is: 2FeCl2 + Cl2 = 2FeCl3.

Oxidants should be added to bivalent to trivalent: such as: 2Fe2++Cl2=2Fe3++; 2cl-2fe2++h2o2+2h+=2fe3++h2o；5fe2＋＋mno4－＋8h＋=5fe3＋＋mn2＋＋4h2o。

The +3-valent compound of iron is relatively stable. Iron ions are +3 valence ions, which are ions obtained by the loss of electrons in the outer shell of iron. The iron atom can also lose two electrons to get ferrous ions. When iron reacts with elemental sulfur, copper sulfate solution, hydrochloric acid, dilute sulfuric acid, etc., it loses two electrons.

Conversion of ferric and ferric ferric:

1. Conversion of ferric ions into ferric ions: ferric ions are reduced to ferric ions with a reducing agent, and the commonly used ones are iron element, copper element, and iodine ion.

2. Conversion of ferric ions into ferric ions: ferric ions are oxidized with oxidants to become ferric ions, and dilute nitric acid, hydrogen peroxide, and chlorine are commonly used.

The +3-valent compound of iron is relatively stable. Iron ions are +3 valence ions, which are ions obtained by the loss of electrons in the outer shell of iron. The iron atom can also lose two electrons to get ferrous ions. When iron reacts with elemental sulfur, copper sulfate solution, hydrochloric acid, dilute sulfuric acid, etc., it loses two electrons.

The conversion of trivalent iron to iron requires a reducing agent, the most commonly used is elemental iron, and the conversion of trivalent iron to elemental iron requires a reducing agent, such as zinc (excess).

First of all, the reduction of iron is not very strong, and the reason for using iron is that it will not introduce impurities, and all of them will generate bivalent iron.

Secondly, even if the iron element is a strong reducing agent, the reaction of trivalent iron with a strong reducing agent will produce iron element, and the previous iron element, or iron element, that is, it does not react, but in fact they are reacting, and all of them form divalent iron, so it turns out that the reduction of iron is not so strong, and it cannot be reduced to iron element, but can only be reduced to divalent iron.

Isn't that what the third year of junior high school is about?

If the ratio of ferrous oxide to oxygen is less than four to one, then Fe2O3 is formed, and if the ratio is greater than four to one, then there is ferric tetroxide.

Reducibility: Isolated from air heating will disproportionate to iron elemental and ferric tetroxide, and heated in air will be oxidized to iron oxide or ferric tetroxide.

Oxidation: (at high temperature) reduced by Co, H2, Al, C, Si, etc.

Other oxides of iron: ferrous oxide (FeO), iron oxide (Fe2O3), ferric tetroxide (Fe3O4).

Structure: Ferrous oxide belongs to the cubic crystal system (similar to the sodium chloride crystal structure), and each iron atom is surrounded by 6 oxygen atoms attached to form an octahedral type coordination, and each oxygen atom is also connected by 6 iron atoms in the same situation. The reason for the appearance of non-integer compounds is that a small amount of divalent iron in FeO is replaced with ferric iron because it is easily oxidized to ferric, occupying tetrahedral voids in the crystal lattice.

1.Divalent iron ions react with strong oxidants to form trivalent macro-excited iron ions.

For example, and chlorine.

Reaction: 3Fe2+ +3Cl2 ==4Fe3+ +6Cl-2First of all, the acidic and alkaline hydrogen ions and hydroxide ions are provided by water.

The water fiber can be seen as ionizing a small amount of hydrogen ions and hydroxide ions by itself.

For strong acids and weak alkali salts, its weak base ions are easy to bind a small amount of hydroxide in the water, so that some hydrogen ions will remain in the solution, making the solution acidic. Take, for example, magnesium sulfate solution. Magnesium ions easily bind to hydroxide in water to form very small amounts of magnesium hydroxide.

In this way, there will be some hydrogen ions left in the solution, and the solution will appear acidic. The reason for the alkalinity of strong and weak salts is the same.

3.Metalness: The reduction property of the elemental substance is the metallicity. Oxidation.

It is non-metallic.

4.The strength of the acid-base depends on the isomass fraction.

The amount of hydrogen ions or hydroxides ionized by an acid-base solution. That is, the more hydrogen ions are ionized, the more acidic they become.

Iron is formed by reacting with a weak oxidantBivalent iron, withStrong oxidizing agentThe reaction produces ferric iron, specifically the following examples:

1. Iron reacts with weak oxidants:Fe+i = FEI (Condition: Heating).fe+2hcl=fecl₂+h₂↑2. Reaction of iron with strong oxidants:

2Fe+3Cl = 2FeCl (Condition: Ignition).

Fe + 6Hno (concentrated) = Fe (No) 3 No + 3H O

Summary. Wait a minute.

Wait a minute.

Acidity: Lack of cultivation 4Fe2+ +O2 + 4H+=4Fe3+ +2H2ONeutral: Voltagra only 12Fe2+ +3O2 +6H2O=8Fe3+ +4Fe(OH)3 (reddish-brown) Alkaline:

4Fe(2+) 8OH(-)O2 + 2H2O ==4Fe(OH)3 (reddish-brown attack).

Can it be written as a chemical equation?

The chemical equation in which divalent iron ions become iron.

This is the chemical equation, treasure.

It's the ion equation, right?

Isn't this an ionic equation?

h2o2 + 2h+ +2fe2+ =2h2o + 2fe3+。

The last one is the ion equation.

The front is the chemical equation. ok thanks.