The acid dissociation constant (pKa) is a measure of the strength of an acid in solution. It quantifies the extent to which an acid can dissociate or release hydrogen ions (H+) when it is dissolved in water.
The pKa value is obtained by taking the negative logarithm (base 10) of the acid dissociation constant (Ka). Mathematically, it can be represented as:
pKa = -log10(Ka)
In simpler terms, the pKa value is a numerical representation of the acidity of an acid. The lower the pKa value, the stronger the acid. Conversely, the higher the pKa value, the weaker the acid.
It is important to note that pKa values are typically given as approximations, rounded to one or two decimal places. The values are determined experimentally and can vary depending on the solvent and temperature used.
what is acid dissociation constants (pKa) values.
1 answer