Question
Mon September 30, 2013 By: Renuka Ganesh
 

how is acidic character decided in organic compounds? for eg. carboxylic acids are more acidic than phenols. how is phenol's or any other organic compound's acidic character determined

Expert Reply
Wed October 02, 2013

An acid in solution sets up this equilibrium:

A hydroxonium ion is formed together with the anion (negative ion) from the acid.
 

Two of the factors which influence the ionisation of an acid are:

  • the strength of the bond being broken,

  • the stability of the ions being formed.

The most important factor in determining the relative acid strengths of these molecules is the nature of the ions formed. 
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