Is it necessary to react with a compound to produce a mixture of elements and compounds

The displacement reaction is a chemical reaction in which an element reacts with a compound to form another element and compound.

are the four basic types of reactions in chemistry.

One of them, including the reaction of metals with metal salts, the reaction of metals with acids, etc. It is a reaction of one element with one compound to produce another element with another compound.

Classification according to the properties of the elements.

According to the properties of the elements, the displacement between metal and non-metal elemental.

1. Metal element replaces metal element.

2al+fe₂o₃

High temperature = Alo +2Fe

Thermite reaction. Al can also be interchanged with V O CRO WO MNO, etc.).

fe+cuso₄

feso₄+cu

2. Replacement of non-metallic elements by metal elements.

zn+2hcl

h₂↑+zncl₂

2na+2h₂o

2naoh+h₂↑

2mg+co₂

Ignition = 2mgo+c

3fe+4h₂o(g)

High temperature = fe o +4h

4na+3co₂

Ignition = 2na co + c

3. Non-metallic elemental substitution of metallic element.

c+2cuo

High temperature = 2Cu + Co

4. Non-metallic elements replace non-metallic elements.

2f₂+2h₂o

4hf+o₂

2c+sio₂

si+2co

c+h o high temperature =

co+h₂2h₂+sicl₄

si+4hcl

cl₂+2nabr

br₂+2nacl

o₂+2h₂s

2s↓+2h₂o

br₂+2hi

2hbr+i₂

Hydrogen is a transition element.

The one in front of it can be replaced with hydrogen (note that there are exceptions, see note at the end), and the one behind it cannot. In other words, hydrogen can be formed by reacting with acid.

Hydrogen, and the hydrogen behind the basic does not react with acid, even if it reacts, it does not produce hydrogen.

1) Elemental metals. Sour.

Salt. Hydrogen. 1. Reaction of zinc and dilute sulfuric acid: zn

h₂so₄znso₄

H2, zinc and dilute hydrochloric acid.

Reaction: Zn2HCl

zncl₂h₂↑

3. Reaction of aluminum and dilute sulfuric acid: 2al

3h₂so₄

al₂(so₄)₃

3H4, aluminum and dilute hydrochloric acid reaction: 2Al

6hcl2alcl₃

3H 5, magnesium and dilute hydrochloric acid reaction: mg+

2hclmgcl₂

H 6, magnesium and dilute sulfuric acid reaction: mg

h₂so₄mgso₄

H 1 6 phenomenon: There are bubbles generated. ）

7. Reaction of iron and dilute hydrochloric acid: Fe

2hclfecl₂

H 8, iron and dilute sulfuric acid reaction: Fe

h₂so₄feso₄

The displacement reaction with the participation of h 7 8 iron shows +2 valence, 7 8 phenomenon: bubbles are generated, and the solution changes from colorless to light green.

Note: Concentrated hydrochloric acid.

It can also react with copper (a less reactive metal) when heated, because Cl and Cu form a more stable ligand [CuCl4], making Cu = Cu

e's balance shifted to the right.

A displacement reaction is a reaction in which one element and one compound produce another element and another compound.

Then find a variety of compounds or a variety of elemental reactions or generate a variety of compounds or a variety of elements, such as:

2al2h2o2naoh

2naalo2

3h2 (gas).

There are three cases of the reaction of elemental and compound substances:1. The reaction between the element and the compound can be a chemical reaction, that is, the element reacts with the compound to form a new compound. This reaction does not involve the displacement of elements, but rather the recombination of atoms takes place.

2. The reaction between the element and the compound can also be a decomposition reaction, that is, the compound is decomposed into two or more elements or compounds. It is believed that this kind of anti-spring should not involve the displacement of elements, but the decomposition process of compounds.

3. The reaction between elemental matter and compound can also be metathesis reaction, that is, the decomposition of a compound into two or more compounds. Again, this reaction does not involve the displacement of elements.

Not necessarily, the displacement reaction is the addition of a compound to produce a mixture of elements, and the question does not say that the reactants are a combination of elements.

The correct displacement reaction can be expressed as A+BC==AB+C, A changes from a elemental substance to a compound, and the valency must change, so it is a redox reaction.

The chemical reaction with the participation of elemental matter can be expressed as A+BC==ABC, A changes from elemental to compound, and the valence must change, so it is a redox reaction.

The decomposition reaction with elemental generation can be expressed as ABC==A+BC, A changes from a compound to a elemental substance, and the valence must change, so it is a redox reaction.

The statement is correct.

According to the reaction characteristics of displacement reaction, chemical reaction, and decomposition reaction, it can be seen that it is correct.

Chemical-compulsory di-halogen substitution reaction.

The merger and osmotic replacement reaction is a reaction in which a compound reacts with an element to form a new compound and a new element. Therefore, it is inaccurate to say that the reaction between the elemental and the compound to form the reaction of 2 substances must be a displacement reaction. For example:

Methane hydrocarbons (which are compounds) CH4 + 2O2 = CO2 + 2H2O react to form two new compounds, which is not a displacement reaction.

C2H5OH+3O2=2H20+3CO2 (ignition) CH42O2CO2

2h2o (ignition).

The first of the above two reactions is alcohol combustion, and the second is methane combustion, which is not a displacement reaction.

I can't think of the opposite. 2h2s+so2=3s+2h2o

Should the anti-soothane produced by salt and water be a neutralization reaction, and the pin-to-branch reaction generated by elemental matter and compounds must be a displacement reaction, but the chemical reaction is no surprise, and there must be an inverse reaction? Not necessarily? Not necessarily.

Chemistry - Compulsory Kaitong Second Matching Brigade - Halogen Elemental Reaction between Pei Sun Stool Exchange.

Chemistry - Compulsory Kaitong Second Matching Brigade - Halogen Elemental Reaction between Pei Sun Stool Exchange.

2kmno4 == plus loss good hot brother air J == k2mno4 + mno2 + o2

or kclo3 = mno2 = kcl + O2

Obviously envy is not.