pKa is an acid dissociation constant.
Definition:
It is the negative logarithm of the acid dissociation constant i.e., Ka
Equation:
Its equation is:
pKa = -log10 Ka
Importance:
1. It shows the extent of dissociation. As the value of pKa increases, the extent of dissociation will decrease.
2. It has the ability of telling the acidic or basic properties of a substance.
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