In chemistry, what is an acid what is a base and what is a salt

High school definition Acid: A compound in which the cations produced during ionization are all hydrogen ions. For example: H2SO4 (sulfuric acid), HCl (hydrochloric acid), HNO3 (nitric acid), H2CO3 (carbonic acid).

Base: The anions produced during ionization are all compounds of hydroxide ions. For example.

NaOH (sodium hydroxide), KOH (potassium hydroxide), Ca(OH)2 (calcium hydroxide), NH3·H20 (ammonia).

Salts: Compounds containing metal cations (or NH4 ammonia) and acid ions are formed when ionized. For example: Na2CO3 (sodium carbonate), CuSO4 (copper sulfate).

NH4NO3 (ammonium nitrate).

At the university, the definition of acid-base salts will be broader and broader, and only the compounds formed by the combination of hydrogen ions and acid ions are acids.

Compounds formed by the combination of metal ions and acid ions are salts, not always of which is the case.

The compound formed by the combination of metal ions and hydroxide ions is a base.

Acid: Chemically refers to a compound that is completely hydrogen when ionized in solution and can turn purple litmus solution red. The ionized cations are all H+, and the anions are all acid compounds.

Base: A compound in which all anions are hydroxide ions when ionized. The ionized anions are all OH-, and the cations are all metal ions or NH4+ compounds.

Salt: A neutral (uncharged) ionic compound composed of metal cations (positively charged ions) and acid anions (negatively charged ions). The ionized cations are all metal ions or NH4+, and the anions are all acid compounds.

Acids: Acid ions (or chloride ions) and hydrogen ions are formed when ionized in an aqueous solution.

Bases: Metal cations (or ammonium ions) and hydroxide ions are formed when ionized in an aqueous solution.

Salts: can be ionized in aqueous solutions to produce metal cations (or ammonium ions) and acid ions (or chloride ions). There are three types of salts, acid salts, neutral salts, and basic salts.

Acid salts can be ionized in aqueous solution to form hydrogen ions, making the solution acidic, such as sodium bisulfate [NaHSO4]; Acid salts are a bit complicated, learn about the properties of acid salts ionization and hydrolysis. The general composition of basic salts - metal + OH + acid group, can be ionized in the aqueous solution to form hydroxide ions to make the solution alkaline, such as basic copper carbonate [Cu(OH)2·CuCO3]. The neutral saline solution is neutral, such as copper sulfate [CuSO4].

In middle school, the one that can release H+ is acid, and the one that can release OH- is the base. The metathesis of acids and bases is called salt.

At the university level, there are two theories of acid-base. They are the Lewis theory and the Bronsted theory.

The former holds that all those who can accept electron pairs are acids, and those that can give electron pairs are bases. There is no such thing as salt.

The latter believes that those who can give protons are called acids, and those who can accept protons are called bases, and there is no such thing as salt.

Acids: When dissolved in water ionization or melting, cations are simply compounds of hydrogen ions.

Base: When dissolved in water ionization or melting, anions are just compounds of hydroxide ions.

Salt: A compound composed of metal cations or ion-by-root ions, acid anions.

Acids and bases and salts are defined as:1. Acid: A compound that is composed of all hydrogen ions (H+) generated during ionization is called an acid, or a substance that dissolves in water and can release protons to form H3O+ (hydronium ions) is also an acid.

2. Alkali: In the theory of acid-base ionization, alkali refers to the compound that ionizes anions ionized in aqueous solution, all of which are oh-; In acid-base proton theory, a base refers to a compound that can accept protons; In acid-base electron theory, a base refers to an electron donor.

3. Salt: In chemistry, salt refers to a class of metal ions or ammonium ions (NH) combined with acid ions of compounds, such as calcium sulfate, copper chloride, sodium acetate, generally speaking, salt is the product of metathesis reaction, such as sulfuric acid and sodium hydroxide to produce sodium sulfate and water, there are also other reactions to generate salt, such as displacement reaction.

Acid: Chemically refers to a compound in which the cation is entirely hydrogen ion (H+) when ionized in solution.

Alkali: The anions ionized in the aqueous solution are all hydroxide ions oh- (today's theory believes that the substances that can absorb protons during ionization are alkaline, and the anions are all oh- are alkalis) are collectively referred to as alkalis.

Salts: Salts refer to a class of compounds in which metal ions or ammonium ions (NH4+) are combined with acid ions or non-metal ions.

The base reacts with the acid to form salt and water. Typical alkalis such as amines (including ammonia, chemical formula: NH3·H2O), caustic soda (sodium hydroxide, chemical formula: NaOH), hydrated lime [calcium hydroxide, chemical formula: Ca(OH)2], etc.

When ionized, all cations are hydrogen ions, which are acids, all anions are hydroxide ions, which are bases, and anions that are not all oh-, and cations that are not all h+ are salts.

In other words, salts are ionic compounds composed of acid anions and metallic cations (or ammonium).

Acid: The cations ionized in the molten state are all hydrogen ions.

Alkali: Acid: The anion ionized in the molten state is all hydroxide ions.

Salt: A compound in which a metal ion or ammonium ion (NH4+) is bound to an acid ion or a non-metal ion.

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Acids and bases and salts are defined as acids: acids that are compound acids that are made up of hydrogen elements and acid groups.

Acid: hydrogen ion + acid ion) base: is a compound base composed of metal elements and hydroxides.

Alkali: hydroxide ion + metal ion) salt: is a compound salt composed of metallic elemental elements (or ammonium radicals) and acid radicals.