Henderson-Hasselbalch equation (redirected from Henderson-Hasselhoff equation)

Hen·der·son-Has·sel·balch equation (hndr-sn-hsl-blk, -häsl-bäl)

n.

An equation expressing the pH of a buffer solution as a function of the concentration of the weak acid or base and the salt components of the buffer.

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Henderson-Hasselbalch equation

an equation by which the pH of a buffer solution, blood plasma being such a one, can be determined:$$\hbox{pH=pK\'^\prime}+\log{[\hbox{BA}]\over[\hbox{HA}]}$$

where pK' is the negative log of the dissociation constant of a weak acid in a buffer solution, [HA] is the concentration in the buffer solution of the weak acid and [BA] is the concentration of a salt of that acid.