Some changes regarding the chemical reaction are urgent

After equilibration, a certain amount of glacial acetic acid is added, and this process is equivalent to the reverse process of adding water to dilute the system. Therefore the equilibrium moves in the opposite direction.

The degree of ionization should be reduced. Assuming that the equilibrium does not move, the degree of ionization is constant. Now the equilibrium is shifted to the left, so the degree of ionization is reduced.

For all substances, n is increased because you add acetic acid, and no matter how the balance moves, the added acetic acid ionizes to form new hydrogen ions and acetate groups. It's just that by moving in equilibrium, in the end these substances increase differently.

c is also all enlarged. The reason is the same as above.

Move in the direction of ionization.

The degree of acetic acid ionization decreases.

N acetate increases, C increases.

Acetate N increases, C increases.

Hydrogen ions n increase and c increases.

The movement of equilibrium is mainly affected by concentration, temperature and pressure, and now the temperature pressure is not considered, glacial acetic acid is added, the concentration of acetic acid increases, and the concentration on the right remains unchanged, so the balance moves to the right, and the degree of ionization indicates the degree of ionization, which is for the degree of complete ionization, and the degree of ionization is inversely related to the concentration of weak electrolyte, so the degree of ionization decreases. After adding, the degree of ionization decreases, so the ionization added will only become less and less, acetic acid n and c are increased, due to the amount of water, there is no change, hydrogen ions and acetate are increased, so they n and c are also increased.

1.The balance shifts to the right; Without considering temperature and pressure, the movement of the equilibrium is mainly affected by the concentration, temperature, and pressure, and when glacial acetic acid is added, the concentration of acetic acid increases, and the concentration on the right side remains unchanged, so the equilibrium shifts to the right.

2.The degree of acetic acid ionization decreases. The degree of ionization indicates the degree of ionization, which is for the degree of complete ionization, and for weak electrolytes, the degree of ionization is inversely related to the concentration, so the degree of ionization decreases.

3.N acetate increases, C increases. This is evident below.

4.Acetate N increases, C increases.

5.Hydrogen ions n increase and c increases.

The addition of a certain amount of glacial acetic acid increases the concentration of the reactants and inhibits the ionization of HAC, so the equilibrium moves in the opposite direction of the reaction, but due to the increase in concentration, the increased H ion mass is much greater than the H ion lost by inhibiting ionization, so the mass of all substances increases.

1. The scale in the kettle is caused by calcium carbonate deposition;

2. The rust in the iron pot is ferric oxide and ferric oxide deposits;

3. The dirt in the toilet bowl is calcium carbonate;

4. The combustion of materials such as paper or wood produces water and carbon dioxide;

5. Iron rust produces rust.

A reaction that produces only one product of a chemical reaction.

There is only one reaction of the reactant decomposition reaction.

Elemental reacts with compounds to form elemental reactions with compounds displacement reactions.

The reaction of two compounds to produce gas or precipitate or weak electrolyte metathesis reaction.

Reactions with valency changes (electron transfer) before and after redox reactions.

Compounding, displacement, metathesis, decomposition!

Chemical reaction: The reaction of multiple substances to form a substance.

Metathesis reaction: Two compounds react to form two other compounds with the same valency to form precipitate, gas, or water.

Decomposition reaction: One substance produces multiple substances.

Displacement reaction: An element and a compound produce another element and compound.

Answer C Derivation: Because the nucleus of the original mu of noisy leaks does not change in the chemical reaction, but the electrons outside the nucleus change Derivation: Because the nucleus does not change in the chemical reaction, it is only the electrons outside the nucleus that change rapidly.

The phenomenon of the reaction of iron oxide with dilute sulfuric acid: the iron oxide dissolves and the solution turns yellow.

The phenomenon of copper oxide reaction with dilute hydrochloric acid: copper oxide dissolves and the solution turns blue.

The phenomenon of copper oxide reaction with dilute sulfuric acid: copper oxide dissolves and the solution turns blue.

cuo+h2so4=cuso4+h2o

This is high school, you can see the phenomenon according to the metal activity table, strong acid is stronger than weak acid, and there is an equation book on it.

All three have bubbles generated, and all of them can ignite.

cuo+h2so4=cuso4+h2o

The first one is that there are no bubbles, and the iron ions appear yellow in solution and the copper ions appear blue.

Looking at the reactants and products, we see that there is only 1 part of the gas of the reactant, but there are 4 parts of CO, that is, we say that after the reaction, it is even more chaotic, because the reaction of 1 part of gas produces 4 parts of gas.

Therefore, according to the degree of chaos, it is expressed in terms of entropy, and we think that it is an entropy increase reaction.

i.e. s 0 and according to the expression of Gibbs free energy g= h-t s

As long as g 0, the reaction can proceed spontaneously, here, t is the Fahrenheit temperature, which must be greater than 0 so this reaction.

t s 0 According to the above expression, regardless of the size of h, as long as t is larger, g will be smaller, i.e. the more negative, the easier it will be to react.

This is from a thermodynamic point of view.

From the kinetic point of view, the temperature increases the reaction rate, and the reaction with the participation of gases increases the pressure and increases the reaction rate.

The reaction is endothermic, so the higher the reaction temperature, the faster the reaction speed (but whether the reaction is completely irrelevant to this)!

There is 1mol of nitrogen before the reaction, and 4mol of CO is generated after the reaction, it is clear that the amount of gas increases, if the pressure of the reaction environment is reduced at the same time as the reaction is carried out, the reaction speed will be faster, and the conversion rate will be higher. --So reducing the pressure helps the reaction to proceed.

Generally speaking, the higher the reaction temperature, the faster the reaction rate, because the hotter it is, the faster it runs, and the greater the chance of collision. Pressure is basically said in the reaction involving gases, which is basically not seen in other high schools. As far as the above reaction is concerned, the state should be given, otherwise it is difficult to say, which involves carbon (solid) nitrogen (gaseous).

I don't usually talk about the effect of pressure on it.

Answer C is divided into slag analysis: According to the law of conservation of mass, the type of elements before and after the reaction does not change, the type and number of atoms do not change, and the mass of the hidden number of atoms does not change, and the essence of chemical change is generated by new substances, so the type of substances must change, and the first solution can be found correctly

Answer: According to the law of conservation of mass, there are several constants before and after a chemical reaction, among which the type of element before and after the reaction does not change, the type and number of atoms do not change, and the mass of the atom does not change, and the essence of chemical change is generated by new substances, so the types of substances must change

Therefore, choose C Comments: Proficient in change and invariance in chemical reactions, and will use the basic principles of chemistry to deal with problems by the law of conservation of mass, so as to cultivate students' innovative thinking ability

The process of defining the division of molecules into atoms, ions, and the rearrangement of atoms and ions to form a new substance is called a chemical reaction.

The essence is the process of breaking old chemical bonds and forming new chemical bonds.

In the reaction, it is often accompanied by luminescence, heating, discoloration, and the formation of precipitates. The basis for determining whether a reaction is chemical is whether the reaction produces a new substance. According to the theory of chemical bonds, it can be judged whether a chemical reaction is based on whether there is the breaking of old bonds and the formation of new bonds in a change process.

In a chemical reaction, the process by which molecules break down into atoms, and the atoms rearrange and combine to form new substances, is called a chemical reaction. In the reaction, it is often accompanied by luminescence, heat, discoloration, and the formation of precipitate, etc., and the basis for judging whether a reaction is a chemical reaction is whether the reaction generates new substances.

A chemical reaction, in which atoms or electrons are converted or transferred between molecules in contact with each other, and new molecules are formed with a change in energy;

The chemical change is essentially the breaking of the old bond and the formation of a new bond.

The process of chemical change is often accompanied by physical change. In the process of chemical change, there are usually luminescence, exothermia, and endothermy. According to the atomic collision theory, the chemical change between molecules is accomplished by collision, and two conditions are required to complete the collision reaction molecule: (1) sufficient energy and (2) correct orientation.

Because the reaction needs to overcome a certain molecular energy barrier, it must have a higher energy to overcome the molecular energy barrier. Two colliding molecules must have the correct orientation for the old bond to break.

Chemically, changes that produce other substances are called chemical changes. Chemical changes are characterized by the formation of other substances, often accompanied by color changes, precipitation, gas production, endothermy, exothermics, luminescence and other phenomena.

It doesn't have to change, then you should choose a, 8 total mass of matter 4 types of elements 5 number of atoms 2 types of atoms These must not change.

3 Types of molecules 7 Types of substances These are bound to change.

All that's left is 1 and 6.

a .1 6

2458 must not change.

3 7 must change.

b, the reaction of matter is the process of rearranging and combining atoms.