In addition to the acid-dissociation constant, Ka, another measure to the streng

Question

In addition to the acid-dissociation constant, Ka, another measure to the strength to an acid is percent ionization, determined by the following formula: Percent ionization = [HA] ionized/ [HA] initial times 100% Percent ionization increases with increasing Ka. Strong acids, for which Ka is very large, ionize completely (100%). For weak acids, the percent ionization changes with concentration. The more diluted the acid is, the greater percent ionization. A certain weak acid, HA, has a Ka value of 3.1 times 10-1 Calculate the percent ionization of HA in a 0.10 M solution. Express your answer to two significant figures and include the appropriate units. Calculate the percent ionization of HA in a 0.010 M solution. Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

part a) percent ionization is 0.18% ------------------------------ part b) percent ionization is 0.56%

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