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7 Ιουλ 2024 · This pKa calculator helps you find the pKa from pH with the Henderson-Hasselbalch equation or with acid dissociation constant (Ka) values.
Assuming acidity constant | Use hydrogen ion concentration, conjugate base concentration and acid concentration instead
22 Νοε 2024 · Use the pKa Calculator to find the acid dissociation constant (pKa) of a substance based on its pH and concentration. Ideal for chemistry studies and acid-base equilibrium analysis.
3 Οκτ 2024 · Formula. The formula to calculate pKa is as follows: \[ pK_a = pH - \log{\frac{[CB]}{[WA]}} \] where: \( pK_a \) is the acid dissociation constant in logarithmic form, \( pH \) is the pH value of the solution, \( [CB] \) is the concentration of the conjugate base in mol/L, \( [WA] \) is the concentration of the weak acid in mol/L.
It involves taking the negative logarithm (base 10) of the ratio of the conjugate base concentration (A-) to the acid concentration (HA). This ratio represents the extent of dissociation of the acid, and the resulting pKa value is a measure of the solution’s acidity. pKa=−log10 ( [HA] [A-] )
The pKa value is the negative base -10 logarithm of the acid dissociation constant (Ka) of a solution. The quantitative behavior of acids and bases in solution can be understood only if their pKa values are known.
The pKa Calculator is a user-friendly web tool that simplifies the process of determining pKa values. Built with convenience in mind, this calculator allows you to input the pH of a solution, the concentration of the conjugate base, and the concentration of the weak acid.
