What happens when wilted greens are put into a solution with salt and acetic acid

I saw it in the ** set of sunset red "Home Tricks" program, I also watched this issue. And I also tried it once, I put the water spinach into a mixture of salt, white vinegar and water, and after about two or three hours, the vegetable really turned green and green. However, the completely yellowed part will not recover, because the cells in the stem and leaves are dead.

The ratio is half a basin of water, a spoonful of salt, three or four bottles of white vinegar, the brine enters the green vegetable cells, the concentration of brine in the basin is lower than the concentration of the green vegetable cell liquid containing salt, the water will enter the green vegetables, and will not be lost, the role of white vinegar is to repair, the two are mixed together, not only make most of the vegetable leaves recover, but also salt and vinegar have the effect of disinfection and insecticide, can remove the residual pesticides and small insects on the green vegetables.

The acidification here is to exclude the interference of other ions (such as silver ions, carbonate ions), and if acidification is done with HCl, Ag+ can be removed

and carbonate ions (CO3).

Both silver chloride and barium carbonate are insoluble in water.

There are three scenarios:

The first does not change.

The second will stand up.

Third, it will continue to shrink.

Look at the degree of wilting. If it is too severe, cell death will not change much. If the cells were still alive, they would be different in different solutions

1.Put in salt water, aIf the salt water is very salty, it will continue to wilt; b.If it is very light (lower than the cell fluid concentration), it will be firmer.

2.Put acetic acid solution in it will first harden and then turn yellow and wilt. The reason is that acetic acid molecules can enter the cell freely like water, so they are strong; However, acetic acid has a toxic effect on cells, and when the cells die, the cells will lose part of the solution due to greater pressure, so they will turn yellow and wilt.

3.Put in a mixture of salt and acetic acid. This situation is more difficult**, green vegetables lose water at the same time there is acetic acid in, wilting or firm to depend on the ratio of salt water and acetic acid to be determined; In short, in the end, it will turn yellow and wilt.

Soaking for a while can change your spirit, and after soaking for a long time, it will rot.

Add some vinegar and run for two hours to get fresh, and if you continue, it will rot.

There will be a rise.

Because of biology1

It is osmosis that has occurred.

Answer B Dry seeds are swelling and water absorption, water enters the outside world from the stomata is transpiration, and the water absorption of the branches of the rose in the vase is mainly through the capillary phenomenon of the duct in the branches, which does not belong to osmosis. Everything else is.

Nope. Because CH COOH is a weak acid and NaCl is a salt, the metathesis reaction of strong acid to weak acid cannot occur.

There is a sound because when the salt is dissolved, a trace amount of gas is produced, but not enough to produce bubbles.

Metathesis reaction: A reaction in which two compounds exchange components with each other to produce two other compounds. Its essence is:

The two substances that undergo the metathesis reaction exchange ions with each other in the aqueous solution, and combine into substances that are difficult to ionize--- precipitation, gas, and water (weak electrolyte), so that the ion concentration in the solution decreases, and the chemical reaction proceeds in the direction of the decrease in ion concentration. It can be abbreviated as ab+cd=ad+cb.

When salt is put into water, it becomes very fine particles that are invisible to the naked eye and dispersed evenly in the water.

Dissolution, in a broad sense, refers to the homogeneous relative excess of more than two substances that are mixed into a molecular state, which is called dissolution. Dissolution in the narrow sense refers to the homogeneous relative process in which a liquid reacts chemically with a solid, liquid, or gas to make it a molecular state, which is called dissolution. For example, table salt or sucrose is dissolved in water to form an aqueous solution.

A solution is not necessarily a liquid, it can be a solid, a liquid, a gas. Both a homogeneous alloy and air can be called a solution. When two substances are miscible with each other, the substance with a large mass is generally called a solvent (if there is water in it, it is generally customary to call water a solvent) The solute particles in the solution are less than 1 nanometer, and there is no Tyndall phenomenon.

At first, it will slowly dissolve, and the more it is added, it will reach saturation, and then it will not be dissolved, and if it is heated, it can dissolve a part, and there will be salt crystals precipitated after it cools. Because the solubility of water to table salt increases with the increase of temperature, but there is a certain limit, and its solubility decreases when the temperature decreases.

You can't see how it dissolves, you just observe that the salt is gradually decreasing--- then divided into 2 conditions.

1.If you add enough water, the salt will slowly disappear until it's all gone.

2.If the amount of water is small, the salt will not dissolve when it dissolves to a certain extent, and there are white crystals (table salt) in the water

The salt will slowly dissolve in the water.

Calcium oxide and water reaction phenomenon: the solution boils, and the solution becomes turbid.

Calcium oxide is what we call quicklime. The reaction between calcium oxide and water releases a large amount of heat, which boils the solution and produces a white precipitate of calcium hydroxide, which makes the solution turbid.

The reaction is divided into two types, one is to pour water into quicklime powder and the other is to put quicklime into water.

The first reaction phenomenon is that the water gradually boils and evaporates dry, and it becomes gray and turbid in the middle. It's all the water that's fully reacting.

The second phenomenon is the gradual dissolution of lime and the generation of heat. This is fully reflected in all quicklime.

That's a strange question. The reason why calcium oxide reacts with water to form Ca(OH)2 makes the solution turbid is that the solubility of Ca(OH)2 is only about that of water. The reason why the clarified lime water is not turbid is that the solute in it is not saturated or just saturated, and the solute does not precipitate.

The knowledge of dissolution and exothermy, the process of dissolution is divided into ionization and hydration, the ionization process is endothermic, and the hydration process is exothermic. The heat emitted by the hydration process is greater than the heat absorbed by the ionization process, i.e., exothermic, and vice versa.

Hope it helps.

There are actually 2 chemical reactions to this process:

1. Calcium oxide and water form calcium hydroxide (transparent).

2. Calcium hydroxide and carbon dioxide in the air produce calcium carbonate (precipitation) and water Therefore, the reaction phenomenon is: first, the calcium oxide gradually dissolves and disappears, and then gradually produces white precipitate.

The reaction phenomenon of calcium oxide and water is that the solution boils, and at the same time the solution will become turbid, and the calcium oxide is what we call quicklime, calcium oxide reacts with water, and releases a large amount of heat to make the solution boil, generating a white precipitate, and calcium hydroxide makes the solution turbid.

No points......The calcium hydroxide generated during the reaction is not completely dissolved (slightly soluble in water), so most of the calcium hydroxide generated is insoluble and becomes a flocculent precipitate, and most of the knowledge of dissolution is related to solubility and endothermic exothermic, which follows the law of conservation of energy.

What are the phenomena and applications of quicklime reaction with water.

Junior Chemistry Experiment 87 Reaction of calcium oxide and water.

When the water temperature rises, white precipitation will occur over a long period of time. Because calcium oxide reacts with water to release a large amount of heat, and the solubility of Ca(OH)2 produced in water is very low, it will become turbid.

Calcium oxide (calcium oxide) is an inorganic compound, its chemical formula is CAO, commonly known as quicklime. The physical properties are white powder on the surface, gray-white for impurities, light yellow or gray when containing impurities, and hygroscopic.

Water (HO) is an inorganic substance composed of hydrogen and oxygen, which is a colorless and odorless transparent liquid at room temperature and pressure. Water is one of the most common substances, an important resource for the survival of all life, including humans, and the most important component of living organisms. Water has played an important role in the evolution of life.

Human beings have long begun to understand water, and water is regarded as a basic component in the ancient simple material concepts of the East and the West, and water is one of the five elements in ancient China. Water is also present in the ancient Western theory of the four elements.

The experimental phenomenon is simply the generation of bubbles.

White vinegar is a sour adjunct for cooking, with a translucent color and mellow sourness. The main raw materials are water, rice, edible alcohol, edible salt, etc. It can be good and regulate the metabolism of the human body, and as a dietary seasoning, the demand is very large.

Soda ash, white fine-grained crystalline powder, scientific name sodium carbonate, common name soda, stone alkali, washing alkali, chemical formula Na2CO3, belongs to the salt class, is a strong electrolyte, has the universality and thermal stability of salt, is soluble in water, and its aqueous solution is alkaline.

Soda ash is sodium carbonate, which reacts with acetic acid in white vinegar. The reaction produces sodium acetate, water, and carbon dioxide. The experimental phenomenon is simply the generation of bubbles.

When white vinegar and soda ash meet, you will see a large number of bubbles being produced. The equation of the reaction is as follows: 2CH3COOH + NA2CO3 = 2CH3COONA + CO2 + H2O This reaction is a typical metathesis reaction.

White vinegar contains acetic acid, which is more acidic than carbonic acid, so it can react with sodium carbonate to produce sodium acetate and carbonic acid, which is unstable and quickly decomposes to produce carbon dioxide gas. This is also a typical reaction of strong acids to weak acids.

Analysis: Soda ash, also known as sodium carbonate, will chemically react with acetic acid in white vinegar to produce carbon dioxide, which is usually not combustible or supportive of combustion and is denser than air. Phenomenon:

1. White vinegar produces bubbles when it comes into contact with soda ash 2. After a while, the candle flame gradually extinguishes.

Bacterial film. It is formed by the multiplication of acetic acid bacteria on the liquid surface.

It shouldn't be harmful to the human body, it's similar to the principle of vinegar brewing.

However, the vinegar produced in the factory must undergo strict quality inspection before it leaves the factory for sale. But over time, acetic acid bacteria will also mutate, and it is difficult to say that some substances that are not good for the human body may be produced.

Soy sauce is very attractive to microorganisms in the air, and there are several types of wild yeasts such as "Japanese zygomy", "round yeast", and "minso yeast", and when they break into the soy sauce, a layer of "white floating" appears, which is actually a layer of bacterial film. Vinegar is the use of acetic acid bacteria in a dilute alcohol solution to oxidize alcohol into acetic acid, that is.

If the sterilized garlic goes in, there will be no "white floating".

I've been opening the vinegar for a month or two, and I haven't seen the things you said!

This is a calculation problem about buffer solutions.

After the two solutions are mixed, acetic acid and sodium acetate are in the solution.

The ratio of concentrations is 1 1According to the buffer solution formula.

ph=pka-lg[hac]/[ac-]

hac]=[ac-], then lg[hac] [ac-]=0ph=pka=

The mixed solution is acidic.

If you want to count chloride ions.

, then only calculate the amount of sodium chloride in the solution after the reaction.

Divide it by the volume of the solution.