What is suspension, turbidity How to distinguish suspension, turbidity common suspension, what are t

Suspensions, emulsions, and colloids.

In the experiment, after the yellow mud powder is added to the water**, it forms a turbid and uneven mixture, which is unstable, and after standing, the sediment particles sink. This mixture, which is formed by the suspension of small particles of insoluble solids in a liquid, is called a suspension.

After peanut oil is added to water**, it also forms an uneven, opaque and unstable mixture, and after standing, the oil droplets float up, resulting in stratification. This mixture, which is formed by the dispersion of small insoluble droplets into a liquid, is called an emulsion.

Suspension and emulsion are collectively referred to as turbidity. Turbid liquid has a wide range of uses in agriculture, metallurgical industry, petroleum industry and food industry.

Colloids: like photosensitive glue on photographic negatives, various jelly foods, latex, etc., they are also uneven, and their stability is better, but worse than solutions.

Solution, turbidity, and colloids are all mixtures formed by the dispersion of one or several substances into one substance. However, due to the dispersion of the substance, the diameter and size of the particles are different. The diameter of the particles of the dispersed material in the turbid solution is greater than 10-7m; It is 10-7-10-9m in colloids and less than 10-9m in solution, that is, the solute has been dispersed into molecules or ions in the solution.

So they are different in terms of uniformity and stability.

The mixture formed by the suspension of small solid particles larger than 100 nanometers in a liquid is called a suspension.

The dispersion system composed of two immiscible liquids, that is, a mixture formed by one liquid dispersed in the form of small droplets in the other liquid is called emulsion.

Suspensions generally aggregate granular substances floating in the upper layers, and emulsions are generally chaotic and unclear with no obvious particles.

Suspension: muddy water, copper hydroxide, calcium carbonate in the liquid and no chemical reaction occurs.

Emulsion: emulsion such as oil-water mixture, petroleum**, latex of rubber, paint, milk, etc.

Suspension: NaCl solution, CuSO4 solution.

Emulsions: oil-water mixtures of emulsifiers, petroleum**, paints.

The suspension is used as a wettable powder pesticide. Emulsion, which should be used as an emulsifiable pesticide.

Suspension: The dispersion of small particles of solid and the unevenness formed in the liquid.

1. Unstable mixtures. Emulsion: The dispersion of small droplets is uneven with the formation in the liquid.

1. Unstable mixtures.

Solution: Too much... NaCl solution, CuSO4 solution ......

Suspension: muddy water, Cu(OH)2 suspension......

Emulsion: oil-water mixture with emulsifier, petroleum**, paint ......

1. The mixture formed by the suspension of small solid particles of insoluble particles greater than 100 nanometers in the liquid is called suspension.

2. Suspension has a very wide range of uses. For example, in medical treatment, some water-insoluble drugs are often formulated into suspensions for use. **Penicillin potassium (sodium) for tonsillitis, etc., should be added with an appropriate amount of water for injection before use, and shaken well to become a suspension for intramuscular injection.

When an X-ray is used to check for a gastroenterology, the patient is given a suspension of barium sulfate (commonly known as a barium swallow), among other things.

Suspended solids refer to solid matter suspended in water, including insoluble inorganic matter, organic matter, sediment, mountain clay, microorganisms, etc.

Turbidity refers to the degree to which suspended matter in water obstructs the passage of light.

Generally speaking, the more suspended solids in the water, the greater the obstruction to light, and the greater the turbidity of the water. However, the turbidity of water is not only related to the amount of suspended matter in the water, but also to their size, shape and refractive index.

The suspension is an insoluble solid solution of surfactants or nanoparticles that are self-dispersed in water or organic solvents, such as calcium carbonate, silica or polystyrene, etc., which can be prepared in this physical form without a single chemical formula.

Suspension: NaCl solution, CuSO4 solution.

Emulsions: oil-water mixtures of emulsifiers, petroleum**, paints.

The suspension is used as a wettable powder pesticide. Emulsion, which should be used as an emulsifiable pesticide.

Suspension: The dispersion of small particles of solid and the unevenness formed in the liquid.

1. Unstable mixtures. Emulsion: The dispersion of small droplets is uneven with the formation in the liquid.

1. Unstable mixtures.

Suspension refers to the mixture formed by the suspension of small solid particles in the liquid, also called suspension; Emulsion refers to the mixture formed by dispersion of small droplets into the liquid, also known as emulsion; They differ from solutions in two ways:

1 The small particles in the suspension and the small droplets in the emulsion are molecular aggregates made up of a collection of many molecules, while the solutes in the solution are dispersed in the form of individual molecules (or ions).

2. Both the suspension and the emulsion are unstable and heterogeneous, and after standing for a while, they will be divided into two layers: the upper and lower layers (the solid particles will gradually sink, while the small droplets will gradually float); However, for the solution, it is the opposite, as long as the conditions remain unchanged (i.e., the temperature, pressure, etc. do not change, the solvent does not evaporate, etc.), the solution does not appear stratification, but homogeneously.

1. Stable

The essential difference is the size of the dispersed particles.

Substances that dissolve in water when they are dissolved in water are dispersed in water. The appearance is uniform and stable.

Suspension: A mixture formed by small solid particles suspended in a liquid is called a suspension.

Emulsion: The mixture formed by the dispersion of small droplets into the liquid is called emulsion.

Whether it is uniform or not.

1. Stability. The concept of solution:

One or several substances are dispersed into another substance to form a homogeneous, stable mixture, called a solution.

The suspension is a part of the solid that is not dissolved and is evenly distributed in the solution.

Emulsion is a part of the liquid that is not dissolved and is evenly distributed in the solution.

The biggest difference between the two is whether the part that is not dissolved is liquid or solid.

When the soil is placed in a test tube filled with water, the turbid liquid formed after shaking is called the suspension. The solid particles of the suspension are a multimolecular aggregate, generally larger than 10-7m in diameter, and cannot penetrate the filter paper.

Emulsion, also known as emulsion, is formed by two immiscible liquids by strong oscillation or under the action of emulsifiers. Usually one of them is water or an aqueous solution, and the other is an organic liquid, such as oils. The small, immiscible droplets dispersed in this liquid are multimolecular aggregates.