Ion Concentrations (brian)

Dissociation:
-ionic compounds are made up of 2 parts
 a) cation - positively charged particle
 b) anion - negatively charged particle
-when ionic compounds are dissolved in water the cation and anion separate from each other
-this process is called dissociation
-when writing dissociation equation the atoms and charges must balance
-the dissociation of sodium chloride is
NaCl > Na+ + Cl-
-if the volume does not change then the concentration of individual ions depends on the balanced coefficients in the dissociation equation

Example: BaSO4 > Ba2+ + SO4 2-
Example: 0.250M solution of KOH
               KOH >     K+      +  OH-
             0.250M  0.250M  0.250M