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> Henderson-Hasselbalch equation
Henderson-Hasselbalch equation
Formula
pH
hydrogen ion concentration or acid-base
Ka
the acid dissociation constant
Aminus
the molar concentration of the conjugate base
HA
the molar concentration of the conjugate acid
Formula description
The Henderson-Hasselbalch equation describes the derivation of pH as a measure of acidity in biological and chemical systems.
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Ka
Aminus
kilogram/cubic meter
attogram/attoliter
gigatonne/zettaliter
grain/cubic foot
grain/cubic inch
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milligram/liter
milligram/microliter
milligram/milliliter
nanogram/cubic centimeter
nanogram/cubic meter
nanogram/cubic micrometer
nanogram/cubic millimeter
nanogram/cubic nanometer
nanogram/liter
ounce (avoirdupois) per cubic foot
ounce (avoirdupois) per cubic inch
ounce (avoirdupois) per gallon (Imperial)
ounce (avoirdupois) per gallon (U.S. fluid)
pound (avoirdupois) per cubic foot
pound (avoirdupois) per cubic inch
pound (avoirdupois) per gallon (Imperial)
pound (avoirdupois) per gallon (U.S. fluid)
pound per barrel
pound/cubic mile
pound/cubic yard
pound/gallon (US)
pound/ounce (UK)
pound/ounce (US)
pound/quart (UK)
pound/quart (US dry)
pound/quart (US)
pound/thousand gallons
psi/thousand feet equivalent
slug/cubic foot
ten thousand kilograms/cubic meter
pound per barrel
pound per cubic foot
HA
kilogram/cubic meter
attogram/attoliter
gigatonne/zettaliter
grain/cubic foot
grain/cubic inch
grain/cubic mile
grain/cubic yard
grain/gallon (UK)
grain/gallon (US dry)
grain/gallon (US)
grain/ounce (UK)
grain/ounce (US)
grain/quart (UK)
grain/quart (US dry)
grain/quart (US)
gram/centiliter
gram/cubic attometer
gram/cubic centimeter
gram/cubic meter
gram/cubic micrometer
gram/cubic millimeter
gram/liter
gram/millilitre
kilogram/kiloliter
kilogram/liter
kilogram/microliter
kilogram/milliliter
microgram/cubic meter
microgram/cubic micrometer
microgram/cubic millimeter
microgram/liter
microgram/microliter
microgram/milliliter
microgram/nanoliter
milligram/cubic meter
milligram/cubic micrometer
milligram/cubic millimeter
milligram/cubic nanometer
milligram/liter
milligram/microliter
milligram/milliliter
nanogram/cubic centimeter
nanogram/cubic meter
nanogram/cubic micrometer
nanogram/cubic millimeter
nanogram/cubic nanometer
nanogram/liter
ounce (avoirdupois) per cubic foot
ounce (avoirdupois) per cubic inch
ounce (avoirdupois) per gallon (Imperial)
ounce (avoirdupois) per gallon (U.S. fluid)
pound (avoirdupois) per cubic foot
pound (avoirdupois) per cubic inch
pound (avoirdupois) per gallon (Imperial)
pound (avoirdupois) per gallon (U.S. fluid)
pound per barrel
pound/cubic mile
pound/cubic yard
pound/gallon (US)
pound/ounce (UK)
pound/ounce (US)
pound/quart (UK)
pound/quart (US dry)
pound/quart (US)
pound/thousand gallons
psi/thousand feet equivalent
slug/cubic foot
ten thousand kilograms/cubic meter
pound per barrel
pound per cubic foot
pH
Precision
0
1
2
3
4
5
6
7
8
9
Formula code
C
Java
JavaScript
LaTeX
pH = -log(Ka)+log(Aminus/HA)
pH = -Math.log(Ka)+Math.log(Aminus/HA)
pH = -Math.log(Ka)+Math.log(Aminus/HA)
pH = pKa + \log{(\frac{[A^-]}{[HA]})}
References
Wikipedia:Henderson–Hasselbalch equation.
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