CONCEPT OF ACID BASES


There are three concepts of bases and acid.

  1. Arrhenius concept 
  2. Bronsted -Lowry concept
  3. Lewis concept

Arrhenius concept: It is the concept that acid release Hᐩ ion and bases release OH⁻ ion.

Ex:


          

Bronsted -Lowry concepts: An acid is any molecule or ion that donate a proton(Hᐩ)

or a base is any molecule or ion that receives (Hᐩ ) proton.


Ex: Hcl gas and H2O
Hcl and NH3(ammonia)




Lewis concept of acids and base:

An acid is an electron - pair acceptor.

A base is an electron-pair donor.



Ex: Between  Hᐩ and OH⁻ 




Between  Hᐩ and NH3(ammonia)