The fundamental difference between the three dispersion systems of solution colloids and turbidity i

1: Option C Detailed explanation: The dispersion of the solution is less than 1 nanometer.

The turbidity dispersion is more than 100 nanometers.

Colloidal dispersions range from 1 nm to 100 nm.

2 This question is uncertain, I think neither is correct, from the Claberon equation (pv=nrt), it can be seen that the volume of the gas depends on the pressure p, the amount of the gaseous substance n and the temperature t (note: r is the volume constant of the molar gas).

The first question of 1001 is correct.

But the second question.

According to the understanding of the title, we should think that the volume of gas at room temperature and pressure has the following decisions.

Personally, I think it's 3

Because I remember that the volume of gases at room temperature and pressure is almost the same, it is the amount of gaseous matter that plays a decisive role.

The root cause is to look at the size of the particles, I can't remember exactly, as if the particles larger than 100 nanometers are turbid, and then I forgot.

Answer: Items BC and D are both manifestations of item B For item A, colloids and.

Turbidity. Medium dispersion.

Mass particles are aggregates of a large number of molecules or ions, so they are not fundamentally different.

Dispersions. The size of the diameter of the particles determines the various characteristics and properties they should have

Answer C When the dispersant is water or other solutions, it is classified according to the diameter of the dispersed particles, and the dispersion system is divided into: solution (less than 1nm), colloidal (1nm 100nm), and turbid liquid (greater than 100nm), so the essential difference between the three dispersion systems of solution, colloid and turbidity is the diameter of the dispersed particles, so a, b, d are wrong, and c is right, so c

There are three types of solution colloids and turbid liquidsDispersed systemThe fundamental difference:

(1) The essential region between the dispersion systems is the size of the diameter of the dispersed particles. The nature of the dispersed system, such as whether it is transparent or not, uniform.

1. Stability is determined by this.

(2) Solution, colloid, and turbid liquid are three different dispersion systems, all of which are mixtures.

(3) PressDispersantsThe state of colloids can be divided into solid sols (such as smoke quartz), liquid sols such as Fe(OH)3 colloids and aerosols (such as fog, clouds).

And there are:

1) Colloids are dispersions, composed of dispersions and dispersants, and are mixtures.

2) Colloids are electrically neutral, colloidal particles generally have the same kind of charge, and some colloidal particles such as starch colloidal particles are not charged.

3) Dialysis is used to remove small molecules or ions in the colloid, and filtration is used to remove suspended particles in the colloid.

4) The difference in the size of dispersed particles is the essence of various dispersion systems.

Dispersionsystem refers to a mixture system in which one or more substances (called dispersate) are dispersed in another substance (called dispersant). Usually we differ according to the diameter of the dispersed particles.

will mix the system.

There are three types of sedans: solution: dispersed particles with a diameter of less than 1 nm colloid: dispersed particles with a diameter of between 1 nm and 100 nm, and turbidity: dispersed particles with a diameter of more than 100 nm.

The fundamental difference between the three dispersion systems of solution colloids and turbidity is the diameter and size of the dispersed substances.

The diameter of the particles in the solution is 1 nanometer, the diameter of the turbid liquid is 100 nanometers, and the diameter of the colloidal particles is 1 nanometer d 100 nanometers. Colloidal solution refers to the solution formed by the dispersion of solid particle drugs or polymer compounds of a certain size in the solvent. The particle point of the dispersed system is generally between 1 100 nm, and most of the dispersed medium is water, and a few are non-aqueous solvent.

Solid particles are dispersed in the solvent as multimolecular aggregates (colloidal particles) to form a multiphase inhomogeneous dispersion system (hydrophobic gel) Polymer compounds are dispersed in the solvent in the form of single molecules to form a single-phase uniform dispersion system (hydrophilic gel). This type of solution has its own unique properties, which is different from both low-molecular dispersion true solutions (dispersed phase particle point less than 1 nanometer) and coarse disperse system suspension (dispersed phase particle point greater than 100 nanometers). Colloidal solutions are widely used in pharmaceutics, especially animal and botanical drugs are closely related to colloidal solutions in the preparation process.

The difference is the size of the particle diameter of the dispersed substance.

The diameter of the particles in the solution is 1 nanometer, the diameter of the turbid liquid is 100 nanometers, and the diameter of the colloidal particles is 1 nanometer d 100 nanometers.

Disperse particle diameter size.

Whether it can pass through a semi-permeable membrane.

Whether it can pass through a semi-permeable membrane.

Appearance, stability.

The fundamental difference lies mainly in the interaction force between the dispersion and the dispersion medium and the size of the dispersed particles.

1. Solution: It refers to the dispersion completely dissolved in the dispersion medium to form a transparent and stable homogeneous solution, in which the particle size of the dispersion is generally about 1 nm. In solution, the interaction forces between the dispersion medium and the dispersion are dominated by ionic bonds, covalent bonds, or van der Waals forces.

2. Colloid: refers to the dispersion suspended in the form of microparticles or macromolecules in the dispersion medium to form an unstable or stable carrying colloidal system. The size of the colloidal particles is between 1 nm and 1 m.

3. Turbidity: refers to the dispersion suspended in the form of coarse particles in the dispersion medium, and the size of the dispersed particles varies from 1 100 m. The difference between turbidity and colloids lies in the fact that the size of the particles and the roughness of the collision are large, and the interaction force between the dispersion and the dispersion medium is dominated by electrostatic force and gravity, and the system formed is very unstable.

In summary, the main difference between solution, colloid, and turbid liquid is the interaction force between the dispersion and the dispersion medium and the size of the dispersed particles.

Emulsion and suspension are unstable, and after a long time, they will stratify, solids will sink, and liquid will rise, and emulsion is liquid mixed with liquid.

Suspension is a solid mixed liquid.

The solution is stable and does not stratify.

The substance obtained by the dissolution of the solute in the solvent is the solution. For example, spring water, various beverages and other solid small particles are suspended in the liquid and form a substance that is a suspension. For example, the substance formed by the dispersion of small droplets of blood into the liquid is emulsion, such as milk, soapy water.

【Answer】c

Answer analysis] test question analysis: when the dispersant is water or other solutions, it is classified according to the diameter of the dispersed particles, and the dispersion system is divided into: solution (less than 1nm), colloidal (1nm 100nm), and turbid liquid (greater than 100nm), so the essential difference between the three dispersion systems of solution, colloidal and turbidity is the diameter of the dispersed particles, so the correct answer is C.

Test Center: Examination.

【Answer】c

Answer analysis] test question analysis: the fundamental difference between the three dispersion systems of solution, colloidal and turbid liquid is the size of the dispersed particles, c is correct, and the rest of the options are related properties, and the answer is c.

Test point: Examine the judgment of the essential difference between the three dispersion systems.

Comments: This question is a basic test question, not difficult, the key to this question is to clarify the meaning of the three scattered systems, which is conducive to cultivating students' logical thinking ability and improving students' ability to analyze and solve problems.