Henderson-Hasselbalch Buffer pH Calculator
Chemistry & BiologyCalculate buffer solution pH using the Henderson-Hasselbalch equation.
Buffer pH
The pH of the buffer solution, calculated using the Henderson-Hasselbalch equation.
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Chemistry & Biology calculators
Frequently Asked Questions
What is the Henderson-Hasselbalch equation used for?
It calculates the pH of a buffer solution made from a weak acid and its conjugate base, widely used in chemistry and biology for preparing buffers that resist pH changes, such as in biological assays and pharmaceutical formulations.
What happens when base and acid concentrations are equal?
When the conjugate base and weak acid concentrations are equal, the logarithm term becomes zero, so the buffer pH equals the pKa exactly — this is the point of maximum buffering capacity.
What is pKa?
pKa is the negative base-10 logarithm of the acid dissociation constant, indicating the strength of a weak acid — lower pKa values indicate a stronger acid that dissociates more readily.
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