What is Acid-Base? | Youneedinfoo

According to the acid-base theory, there are different definitions of an acid-base such as the Arrhenius concept, Bronsted-Lowry Theory, Lewis Concept.

Definition of Acid-Base according to Arrhenius Theory: 

Which hydrogen-containing substances that produce H+ ions in a solution are called acids. 

                             HCl = H+ + Cl- (HCl as Acid)

On the other hand, Hydroxyl-containing substances that produce OH- ions are called bases. 

                                 

                             NaOH = Na+ + OH- (NaOH as Base)

Definition of Acid-Base according to Bronsted Lowry Theory:

Which substances donate Proton (H+) to other substances in a solution are called Acids and which substances that accept Proton (OH-) from other substances are called bases.

HCl as Acid, 

                                         HCl = H+ + Cl-  

H2O as Base, 

                                       H2O + H+ = H3O+

 

Definition of Acid-Base according to Lewis Concept:

Which substances accept electron pair are called Acids and which substances donate electron pair are called Bases.

Cu2+ as acid,

                                           Cu2+ + 2e- = Cu

 

F- as a base, 

                                           2F- - 2e- = F2