Question #208732

Write 50 word describing Henderson-Hasselbalch in chemistry.

Expert's answer

The Henderson–Hasselbalch equation mathematically connects the measurable pH of a solution with the pKa (which is equal to -log Ka) of the acid. The equation is also useful for estimating the pH of a buffer solution and finding the equilibrium pH in an acid-base reaction.

The formula for the Henderson–Hasselbalch equation is: "pH=p{ K }_{ a }+log(\\frac { { [A }^{ - }] }{ [HA] } )"

where pH is the concentration of [H+], pKa is the acid dissociation constant, and [A–] and [HA] are concentrations of the conjugate base and starting acid.

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