[PDF] acide base définition

How does a base differ from an acid?

The main difference between acid and base is that acids act as proton donors whereas base act as proton acceptors. Upon the reaction of acids and bases in solutions, the H + ions are neutralized by OH – ions, and they form water molecules together. And their ionic counterparts get together to form salts.

What does an acid or base mean?

In an operational sense, an acid is any substance that increases the concentration of the H ion when it dissolves in water. A base is any substance that increases the concentration of the OH ion when it dissolves in water. These definitions tie the theory of acids and bases to a simple laboratory test for acids and bases.

What is an acid and what's a base?

Acids are chemical compounds that show, in water solution, a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red . Bases are chemical compounds that, in solution, are soapy to the touch and turn red vegetable dyes blue. When mixed, acids and bases neutralize one another and produce salts.