Concept of Acids and Bases - Application to Organic Compounds

Bronsted-Lowry theory

Acid is a proton donor and based is proton acceptor.
Any compound that has a hydrogen atom can act as a Bronsted-Lowry acid.
Hence H-A is used as general representation for an acid (H represents hydrogen)

Lewis Theory
According to Lewis theory, any molecule that has an electron deficient atom (site) that can accept a pair of electrons, is an acid.

Conjugate acid

Conjugate base

Acidity constant

Ph value

The effects of structure of the molecule on the strengths of acids and bases

Acids and Bases - Videos on Knol