Is iron hydroxide colloids electrolytes, and can iron hydroxide colloids conduct electricity

Be. Electrolytes are compounds that are capable of conducting electricity in an aqueous solution or in a molten state, such as acids, bases, and salts. Compounds that do not conduct electricity in these cases are called non-electrolytes, such as sucrose.

alcohol, etc. It is not necessarily the electrolyte that can conduct electricity, and to judge whether a compound is an electrolyte, it is not only based on whether it conducts electricity in aqueous solution, but also needs to further investigate its crystal structure and chemical bonds.

nature and other factors. For example, judging barium sulfate.

Calcium carbonate and iron hydroxide.

Whether it is an electrolyte or not. Barium sulfate is insoluble in water, the ion concentration in the solution is very small, and its aqueous solution is not conductive and appears to be a non-electrolyte. However, molten barium sulfate can conduct electricity.

Thus, barium sulfate is an electrolyte. Calcium carbonate and barium sulfate have a similar situation and are also electrolytes. From the structural point of view, for other insoluble salts, as long as they are ionic compounds or strongly polar covalent compounds, although they are insoluble, the dissolved part is completely ionized, so it is also an electrolyte.

Because dissolution is absolute, insolubility is relative. There is no absolutely insoluble substance. The case of iron hydroxide is more complicated, the chemical bond between Fe3+ and OH- has covalent properties, and its solubility.

smaller than barium sulfate; A small part of the water-soluble part may form colloids, and the rest can also be ionized into ions. But iron hydroxide is also an electrolyte. To determine whether the oxide is an electrolyte, a specific analysis should also be made.

Non-metallic oxides such as SO2, SO3, P2O5, CO2, etc., which are covalent compounds that do not conduct electricity in liquid state, are not electrolytes. Some oxides are not electrolytes even if they conduct electricity in aqueous solutions. Because these oxides react with water to form new substances that can conduct electricity, what conducts electricity in the solution is not the original oxide, such as SO2 itself cannot be ionized, but it reacts with water to form sulfurous acid, which is the electrolyte.

Metal oxides such as Na2O, MGO, CaO, Al2O3, etc., are ionic compounds that are capable of conducting electricity in the molten state and are therefore electrolytes. It can be seen that electrolytes include ionic or strongly polar covalent compounds; Non-electrolytes include weakly polar or non-polar covalent compounds. The aqueous solution of electrolytes conducts electricity because the electrolyte can be dissociated into ions.

As for whether a substance can be ionized in water, it is determined by its structure. Therefore, the identification of electrolytes from non-electrolytes by the structure of matter is the essence of the problem. In addition, some substances that conduct electricity, such as all metals, are neither electrolytes nor non-electrolytes.

Because they are not chemical compounds that can conduct electricity, but elemental substances, they do not meet the definition of electrolytes, for example, although barium sulfate is a poorly soluble substance, the dissolved components are completely ionized in water, so barium sulfate is a strong electrolyte.

First of all, ferric hydroxide colloids are not electrolytes. Because colloids are mixtures, electrolytes refer to pure substances.

Again, LZ seems to confuse electrolytes with electrolysis.

Electrolytes have nothing to do with electrolysis.

Electrolysis of ferric ion solution to obtain ferric iron first, and then release hydrogen. It is the bivalent which was reduced.

Colloids are mixtures, belonging to the dispersion system, with dispersions, dispersants, so it will never be an electrolyte, and the electrolyte is a compound and is a pure substance.

Ferrohydroxide colloids conduct electricity. Ferric hydroxide colloids are not charged, whereas colloidal particles are charged. Under the action of the electric field, the directional movement in the colloidal particle dispersant (i.e., the electrophoresis phenomenon), while the electrophoresis phenomenon of Fe(OH)3 colloidal is:

The particle moves towards the cathode, i.e., the Fe(OH)3 colloids are positively charged and can conduct electricity.

Ferric hydroxide colloids are chemical substances. It has amphoteric but its alkalinity is stronger than acidity, and the newly prepared iron hydroxide is easily soluble in inorganic acids and organic acids, and can also be soluble in hot concentrated alkali. The colloidal body as a whole is not charged, and the charged colloidal particles are positively charged.

Colloidal dispersions themselves are electrically neutral, but colloidal particles are charged. In general, hydroxide colloidal particles such as iron hydroxide and aluminum hydroxide are positively charged. Colloidal particles such as gold, silver, platinum, sulfur, arsenic sulfide, silica gel, starch, etc., are negatively charged.

The charged nature of colloids such as silver iodide, proteins, etc., is related to the conditions. In the ferric hydroxide sol you are talking about, the colloidal particles are positively charged.

Extremely strong oxidants, such as sodium hypochlorite, can oxidize freshly made iron hydroxide to + oxidation state of sodium ferrite Na2FeO4 in an alkaline medium. When heated, it gradually decomposes into iron oxide and water. Insoluble in water, ether and ethanol, soluble in acid, solubility in acid with the length of time to make, the new soluble in acid, if placed for a long time, it is difficult to dissolve.

Iron hydroxide can be used to make pigments, medicines, water purification, and can also be used as an antidote to arsenic.

Dropwise addition of hydrochloric acid to the ferric hydroxide colloidal can first make the colloidal polysink, and when the solution is continued dropwise, the precipitate gradually disappears.

Equation: Fe(OH)3 (colloid) + 3HCl = FeCl3 + 3H2O

1. Phenomenon: precipitation first and then dissolution.

2. Reason: Precipitation is because colloidal condensation turns into precipitation, and sulfuric acid is equivalent to electrolyte.

Colloidal cohesion. When too much sulfuric acid is added, acid-base neutralization occurs, and iron hydroxide reacts with hydrochloric acid to form iron chloride.

and water, the precipitate dissolves.

Ferrohydroxide colloid.

In alkaline media, freshly made iron hydroxide can be oxidized into + oxidation state of sodium ferrate. When heated, it gradually decomposes into iron oxide and water. Insoluble in water, ether and ethanol.

Soluble in acids, solubility in acids.

Depending on the length of time, the newly prepared one is easily soluble in acid, and if it is placed for a long time, the carrier base is difficult to dissolve.

An electrolyte is defined as a compound that conducts electricity in a water-dissolved revision solution or in a molten state. Hydroxide ferrocolloidIt is a mixture (iron hydroxide colloids dispersed in water), not a compound, and naturally not an electrolyte.

Iron hydroxide has an ionization equilibrium, and the ionized hydroxide can be neutralized with acid, and as the hydroxide is consumed, the ionization proceeds in a positive direction until the end of the reaction.

Ferric hydroxide colloidal supplement is an electrolyte, because the colloid is a mixture, and the electrolyte refers to a pure substance.

And iron hydroxide is the electrolyte. Ferric hydroxide colloids are amphoteric but their alkalinity is stronger than acidity, and the newly made iron hydroxide is easily soluble in inorganic acids and organic acids.

Colloidal particles adsorb ions in the solution and become charged, and when positive ions are adsorbed, colloidal particles are positively charged and adsorb negative ions.

then the charge is negative. In different cases, the kind of ions that colloidal particles are easy to adsorb are related to the nature of the adsorbed ions and the surface structure of colloidal particles.

Thus, the iron hydroxide colloidal is not charged, while the colloidal particles are charged. Under the action of an electric field, colloidal particle dispersant.

The electrophoresis phenomenon of Fe(OH)3 colloids is the movement of particles towards the cathode, i.e., the Fe(OH)3 particles are positively charged.

Electrolytes are compounds that are able to conduct electricity when dissolved in an aqueous solution or in a molten state. According to the degree of ionization, it can be divided into strong electrolyte and weak electrolyte, almost all of which are ionized by strong electrolytes, and only a small part of which are ionized by weak electrolytes.

Electrolytes are all ionic bonds.

or polar covalently bonded substances. Compounds can dissociate into free-moving ions when dissolved in water or when heated. Ionic compounds.

It can conduct electricity in aqueous solution or in the molten state; Certain covalent compounds.

It can also conduct electricity in aqueous solutions, but there is also a solid electrolyte, which conducts ** in the crystal lattice for the migration of ions.

The ferric hydroxide colloidal is not charged as a whole, and the charged colloidal particles are positively charged.