acids, bases and buffers
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Last updated 5:30 PM on 1/27/26
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Henderson-Hasselbalch Equation
The equation used to calculate the pH of a buffer solution: pH = pK{a} + \log\left(\frac{[\text{base}]}{[\text{weak acid}]}\right). It relates the pH to the pK{a} and the ratio of the concentrations of the conjugate base and weak acid.
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K_{a} Calculation
The acid dissociation constant (K{a}) can be calculated from pK{a} using the formula: K{a} = 10^{-pK{a}}. Based on the equilibrium expression for a buffer solution, it is also expressed as: $$
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