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Ionization Constants
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Daniela_5535
#1 Posted : Thursday, July 16, 2020 3:22:02 AM
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Hello,

I’m just a bit confused on what exactly is meant by ionization constant- is it related to the ionization energy and amount of energy we would need to remove an electron ? Also, is it ever possible to have an ionization constant less then one ?

Thank you

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INSTR_Katerina_102
#2 Posted : Thursday, July 16, 2020 3:37:10 AM
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Hi,

Ionization constant has a lot to do with acid base reactions as it is the propensity for a substance to form ions in water. It is distinct from the ionization energy as it is not dealing with a process where you remove an electron to form an ion from a neutral species.

For example HA --> H+ + A- is governed by an ionization constant.

We have 3 specific ionization constants, those for water (Kw), acids (Ka), and bases (Kb).

An ionization constant can have a value of less than 1, as a value of 1 corresponds to a complete dissociation.

Granted, I'm not actually too familiar with ionization constants so I would call it pretty low yield.

I hope this helps,

Katt
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