Will ionic compounds ionize if they melt, and will molecular substances such as Hcl ionize when melt

Ionic compounds ionized when melted or dissolved in water, such as sodium chloride;Whereas, covalent compounds can only ionize when dissolved in water.

Sometimes the product of ionization is not the same as NaHSO4=Na+ +H+ +SO4 in water 2-

But at the time of melting, NaHSO4 = Na+ + HSO4 electrolyte.

Compounds that conduct electricity in an aqueous solution or in a melted state are called electrolytes.

ii ionization. The process by which an electrolyte dissociates into freely moving ions when dissolved in water or when melted by heat.

iii. Note.

The electrolyte must be a chemical compound.

Compounds are not necessarily all electrolytes.

The substance that conducts electricity is not necessarily an electrolyte.

Ionization is a prerequisite for the conduction of electricity by electrolytes.

The electrolyte must be a compound that can ionize itself into freely moving ions.

iiii ionization angle of the nature of acid-base salts.

The cations ionized by acid electrolytes are all H+

The anions ionized by the alkaline electrolyte are all oh-

The cation ionized by the salt electrolyte is a metal ion or NH4+ and the anion is an acid ion.

Yes!nahso4=na+ +h+ +so4 2-

But at the time of melting, NaHSO4=NA+ +HSO4-

Sometimes the product is different.

Not necessarily. Such as metal elements.

The molten state is only for pure substances, because the melting points of different substances in the mixture are different, so the mixture does not have a molten state, such as glass, and some solid substances do not go through the liquid process when heated, and directly become gaseous substances called sublimation, because they do not go through the liquid state, so there is no molten state, such as iodine.

The reaction condition of the reaction in the molten state is generally high temperature, which is generally used as an extended concept of the molten state, i.e., high temperature, as a reaction condition, which should not be confused with the definition.

Melting point determination is contraindicated.

When determining the melting point, attention should be paid to the size of the capillary. Because the amount of test sample in the capillary has an impact on the melting point measurement results, if the inner diameter is too large, the total melting temperature will be high, so the inner diameter of the capillary must comply with the pharmacopoeia.

The thermometer must be calibrated, and it is better to draw a correction curve, otherwise the accuracy of the measurement results will be affected.

When the melting point of a drug is determined with different temperature transfer solutions, the results obtained on some test articles may be inconsistent. Therefore, the temperature transfer solution must be selected according to the pharmacopoeia regulations.

The above content refers to Encyclopedia - Molten State.

(1) Ionic compounds conduct electricity in the molten state!

2) K2CO3 has a molten state!

Conductive! K2CO3 ==2K+ +CO32-(3)KhCO3 -- decomposes by heat!

2khco3 ==k2co3 + co2 + h2o

1. Yes, the compounds that can conduct electricity in the molten state are ionic compounds 2. Ionic compounds are composed of cations (mainly metal ions) and anions (acid ions or non-metal ions).

3. A single metal is a single element, and a variety of metals are alloys, none of which are compounds4. Please note that the research object of electrolyte is a compound.

This sentence is wrong 1. It should be corrected as: a compound that can conduct electricity in the molten state is an ionic compound. 2, Metals are elemental, not compounds 3, The definition of electrolyte, there are similar sentences.

When a substance is dissolved in water, it ionizes into ions in the water if it is an electrolyte.

For inorganic compounds, their ionization in water can be divided into two categories:

1.Acids: Ionization of hydrogen ions (H+) and corresponding anions in water. For example, hydrochloric acid (HCl) is ionized in water to H+ and buried Cl-; Sulfuric acid (H2SO4) is ionized in water to 2H+ and SO42-.

2.Alkaline substances: ionization of hydroxide ions (oh-) and corresponding cations in water.

For example, sodium hydroxide (NaOH) ionizes in water to Na+ and Oh-; Aluminum hydroxide (Al(OH)3) ionizes in water to Al3+ and 3Oh-.

In the case of organic compounds, their ionization in water is usually due to the ionization groups they contain. For example, acetic acid (CH3COOH) is ionized in water to CH3COO- and H+; Ethanol (CH3CH2OH) is ionized in water to CH3CH2O- and H+.

It is important to note that not all substances will ionize in water, for example, non-electrolytes such as glucose, fatty acids, etc. will not ionize into ions in water. In addition, even ionized substances can have different degrees of ionization in different solvents.

This theory is actually wrong, and there are some covalent compounds.

It does conduct electricity when melted, but of course the conductivity is generally not strong.

However, in middle school, it is believed that "a compound that can conduct electricity in the molten state must have ionic bonds", which is one of several fallacies in current secondary education. But the current state of education is such that we have to go with the flow. It is only when you get to university that you build the right concept.

But the example you gave is not right. Alcl3 is a covalent compound and is also non-conductive in its liquid state. It is precisely because it does not conduct electricity, and the industry has to electrolyze alumina when it is used to prepare metal aluminum by electrolysis.

Cryolite. Examples of covalent compounds that conduct electricity in the liquid state: BRF3, IF5, PCL5, N2O4, SO2, H2SO4.

Don't be surprised, anhydrous sulfuric acid is electrically conductive and not weakly conductive.

Strictly speaking, almost all substances dissolved in water are chemical changes. Yes, solid sulfuric acid itself does not have ionic bonds, but is produced after ionization, so it is a chemical change. However, the ionization of sodium chloride is not a chemical attack.

The answer is no.

Only chloride ions and sodium ions are present in solid sodium chloride. However, after being dissolved in water, due to the attraction of the polarity of the water - which is why many substances can be ionized in water, the polarity of water - chloride ions are separated from sodium ions, and more often than not, they are "combined and separated" with water molecules. In the water, there are far more water molecules around the chloride ions than the sodium ions, and the distance is also close; The same is true for sodium.

Therefore, in fact, chemical changes are constantly occurring in the solution, such as chloride ions, chloride monohydrate ions, chloride dihydrate ions, and even dichloride trihydrate ions, etc., and so on. The same is true for sodium. Therefore, strictly speaking, not only the ionization dissolved in water is a chemical change, but even the ionization equilibrium after the ionization has been completed is constantly undergoing chemical changes.

Belong. Chemistry becomes auspicious and defeated.

Because. Ionization.

generated. Particle.

Be. Hydrated ions.

Trembling and there. Energy.

changes.

Yes, e.g. MGO (melting) chamber combustion ===mg2+ +O2 - Note: Melt electrolysis is completely different from molten ionization.

Molten electrolysis refers to the transfer of ionic compounds.

Electrolysis in the molten state is mainly used to smelt active metals such as potassium, calcium, magnesium, aluminum, etc.

MgCl2 (melted) == electrolysis == mg +Cl2 while melt ionization refers to the ionic bond of ionic compounds in their molten state.

It breaks completely, resulting in free-moving anions and cations.

It should be that in the molten state, if it is an ionic compound, its ionic bond will be completely broken and ionized, and some ionic compounds and covalent compounds.

covalent bonds in .

is not affected, so the covalent compound is not ionized at all in the molten state.

Note: Non-electrolytes are compounds that do not conduct electricity in aqueous solution or in the molten state.

Whereas, the electrolyte that is partially ionized in an aqueous solution is a weak electrolyte.