Question
Thu December 27, 2012 By:
 

Hello sir, can u tell me what is ionization constant and how it can be represented?

Expert Reply
Wed January 02, 2013
Ionization  is the process of converting an atom or molecule into an ion by adding or removing charged particles such as electrons or ions. when ionisation occurs during equilibrium a constant is formed which is called ionisation constant.
let us consider the ionisation of an acid:
For the reaction in which the acid HA dissociates to form the ions H+ and A-, where Ka is ionisation constant:
 
                 HA H+ + A-
Ka = [H+][A-]

[HA]
 
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