Is aluminum hydroxide adsorbed pigment bleaching?

It doesn't belong. Bleaching refers to the ability to discolor colored organics (e.g. litmus, phenolphthalein, etc.).

Aluminium hydroxide is a flocculent precipitate that can precipitate suspended solids in water.

The newly made aluminum hydroxide has an aluminum hydroxide colloid, which has adsorption properties, which will adsorb the pigment in the magenta solution and make it fade.

Are you sure. The principle of water purification.

Hope to adopt it in time, thank you!

Aluminum hydroxide can, but most of the colloids can't be adsorbed, think about ,,, haze or colloids, the definition of colloids is very broad, in addition to colloids in the general sense, there are aerosols, solid sols, adsorption pigments are related to the properties of the colloid itself.

a.It may be that blinking an eye will cause the acid to melt into it (my understanding) b, the concentrated alkali solution should be neutralized with the acid, but the strong acid will damage the hand.

c.Add water first, and concentrated sulfuric acid will splash.

d.Alcohol dissolves in water and burns in water.

Gasoline and sodium chloride solution are incommiscible, ethanol and water are soluble but have different boiling points, sodium chloride and elemental bromine are soluble in water, so they cannot be distilled with separate liquids.

It is useless to rinse with the solution to be configured, because the volumetric flask is to prepare the solution, and the configured solution should be imported into it, and the volumetric flask should be shaken well during operation, so a

At room temperature, a dense oxide film will be formed, and the oxide film will prevent it from continuing to oxidize.

If it is a, it means that there is no metal left.

Aluminium hydroxide can condense suspended solids in water and adsorb pigments.

Silicon has a high melting point and is inexpensive.

The reaction equation is SO2 + Cl2 + 2H2O = H2SO4 + 2HCl

A: It should be rinsed with water immediately.

C: Graduated cylinders cannot be used to prepare solutions.

D: When the alcohol is burning on the test bench, cover the flame with a rag.

Gasoline and sodium chloride solutions are not miscible with each other.

39 percent ethanol solution The two are miscible in the two.

Sodium chloride solution and aqueous solution of elemental bromine, both soluble in water, but bromine is more soluble in organic solvents, and washing with the solution to be configured will lead to an increase in the mass fraction of the solute, and the aluminum sheet can be placed in an unsealed carton for a long time, and the aluminum sheet will not form a dense oxide film at room temperature, which prevents the further reaction of aluminum.

The remaining solids can be attracted to magnets after filtration, indicating that there is iron formation, so there are fewer ferrous ions in the solution.

The energy of the photons is transferred to the silicon atoms, so that the electrons undergo a migration, and the free electrons accumulate to form a potential difference, when the external circuit is turned on, under the action of this voltage, there will be a current flowing through the external circuit to produce a certain output power. The essence of this process is: the process of converting photon energy into electrical energy;

so2+cl2+2h2o=2hcl+h2so4！！

“c.Adding water first and concentrated sulfuric acid will splash "The top floor is wrong, the order is correct, but the graduated cylinder can't prepare the solution!" The application of silicon should be mainly for semiconductors.

A This can only be said to be experience, and it is obviously wrong, if it is concentrated sulfuric acid, washing with water will release heat and cause more damage.

b This is the original language of the textbook, and the words have not changed.

cThis is equivalent to acid into water, which will release a large amount of exothermic and moist acid splashes.

d needs to be extinguished with a damp rag, which is also the original words in the book.

Gasoline and NaClaq are immiscible and separated. Ethanol and water are miscible in infinite proportions and can only be distilled (by the way, a water absorbent can also be used). Naclaq and elemental bromine are immiscible (liquid bromine is denser than water but will form bromine water due to diffusion), extraction.

Option b will make the concentration of the prepared solution too large (the correct operation textbook is available, very detailed).

AL generates a dense oxide film in the air to protect the internal metal from further corrosion and is not sealed for storage.

It can be attracted by the magnet, indicating that there is elemental iron remaining, and the ionic order of the reaction of elemental iron in the mixed solution is that the trivalent iron is greater than the divalent copper ion, and the hydrogen ion is more than the divalent copper ion, and the divalent copper ion is all replaced by elemental matter, and there are only divalent iron ions in the solution.

Aluminum hydroxide is a colloidal substance that can adsorb suspended solids and pigments, and should be the definition of the textbook. (Otherwise, you can only remember).

The composition of sand is silica, so silicon is widely used, and the raw materials are cheap (desert or something) or there is elemental silicon that can better absorb the sun's energy and convert it into electricity.

Sulfur dioxide and chlorine react to form sulfuric acid and hydrochloric acid, which are non-bleaching.

Anyway, classmates, go back and read the book, a lot of it is the content of the book, remember to give points

Conservation of charge means that the total charge number of anion and cation in the solution is the same, that is, the solution is electrically neutral.

The trick is to see how many anions and cations there are.

The main method of extinguishing the fire is to isolate oxygen or combustibles, because alcohol can burn, so choose to isolate oxygen, generally you can soak the rag with water to cover the fire area.

It is possible that the modified substance is chlorine absorption, and sulfur dioxide is bleaching in a magenta solution.

There are a lot of problems, the first option a is the treatment of acid to **, it is difficult to say what is specific in the eyes, and the measuring bucket can not be prepared with solution, water and alcohol can be miscible in any ratio, and water cannot extinguish the fire of alcohol.

The second question, your answer is correct.

When the third volumetric flask is used to prepare the solution, the accuracy of the solution that is mixed after being washed with the liquid to be prepared cannot meet the requirements.

After aluminum generates a dense oxide film, it can protect the central part from oxidation, which is equivalent to a protective film on the outer layer, so it is feasible.

The fifth can be attracted by the magnet to prove that there is iron left, so the reaction is complete, and the iron can replace the copper chloride, so there are no copper ions left in the solution.

The sixth aluminium hydroxide is adsorbent and was originally used to purify water to remove sediment and some pigments.

Solar cells are invented using the principle of photoelectric conversion, which requires a special structure formed by semiconductors to be realized, and silicon as a semiconductor element has become a common material for manufacturing solar cells with its advantages in terms of content.

The last possibility is that the colored substance cannot be oxidized by these two gases, so it does not fade.

My friends recommended me to use the Hong Kong Yee Mei Skin Purifying Mask, which is sure and the results are immediate.

What you said upstairs doesn't seem to have anything to do with the problem, does it?

Phenolphthalein is a weak organic acid with a colorless lactone structure in a pH 8 solution and a red quinone structure when pH increases. It is very unstable under alkaline conditions and is easily converted into a colorless carboxylic acid formula under concentrated alkali. It is the principle of "bleaching" that does not explain that phenolphthalein has bleaching properties.

Hope it helps

Commonly used bleaching agents are activated carbon, chlorine water, Na2O2, O3, H2O2, SO2, HCl, Naclo, Ca(clo)2 (the active ingredient of bleaching powder), etc.

Adsorption bleaching: activated carbon and aluminum hydroxide colloids adsorb colored substances and play a bleaching role, which is a physical change.

Strong oxidizing bleaching: chlorine water, bleaching powder Ca(CLO)2, Na2O2, O3, H2O2, Naclo, have bleaching property because they have strong oxidizing properties and can oxidize colored substances into colorless substances. Once oxidized, they cannot return to their original color, so their bleaching effect is permanent.

Chemical bleaching: SO2 has a bleaching effect because it is dissolved in water to form H2SO3, which can be combined with colored organic compounds (such as magenta) to form unstable colorless compounds, and colorless compounds can return to their original colors under certain conditions (such as heating), which is temporary bleaching. The bleaching effect of SO2 has special characteristics.

High concentrations of sodium hydroxide are not bleaching.

It is not bleaching, but it has strong oxidizing properties.

Specifically, colloidal aluminum hydroxide has a positive charge, so it can adsorb negatively charged particles, such as non-metal oxides, metal sulfides, silicate colloids, arsenic sulfide, etc. Proteins have charged groups that can be adsorbed by aluminum hydroxide particles.

Colloidal aluminum hydroxide has the function of adsorption of charged particles, and proteins have charged groups that can be adsorbed by aluminium hydroxide particles.