Acid, any substance that in water solution tastes sour, changes the color of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical reactions (acid catalysis).
The meaning of ACID is a sour substance; specifically : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, redden litmus, and have a pH less than 7, that are hydrogen-containing molecules or ions able to give up a proton to a base, or that are substances able to accept an unshared pair of electrons from a base. How to ...
Hydrochloric acid is a strong acid, since it is completely dissociated in water. Hydrochloric acid is the preferred acid in titration for determining the amount of bases and can also be used to prepare various chloride salts. It is often sold under the common name of muriatic acid for applications like cleaning concrete and pools.
ACID definition: a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base. Acids are proton donors that yield hydronium ions in water solution, or electron-pair acceptors that ...
Hydrochloric acid (in beaker) reacting with ammonia fumes to produce ammonium chloride (white smoke). Acids can be dangerous: The holes in the paper were made by a solution with 98% sulfuric acid. An acid is a type of chemical compound. The definition of an acid has changed as people discovered more about chemistry. Acids were originally grouped together by their properties: they taste sour ...