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It refers to the acidity of the fatty acid (which make up the oils). Every fatty acid is composed of a non-polar long chain of hydrocarbons (carbon and hydrogen) and a polar head made up of Carboxylic ACID. Every acid has something called pKa which determines the acidity of that acid.
The bigger the pKa (e.g. 25), the weaker the acid.
The smaller ther pKa (e.g. 2), the stronger the acid.
Wiki User
∙ 14y ago
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∙ 15y agopKa = - log Ka so pKa - log Ka = 2 pKa or 2(-log Ka)
Wiki User
∙ 13y agopKa is the acid dissociation constant for any acid. It is a measure of strength of the acid.
Wiki User
∙ 13y agoKa is the equilibrium constant for an acid reaction. pKa is the -log of Ka
Just like you take -log of concentration of H to get pH, you take -log of Ka to get pKa
Wiki User
∙ 10y ago~26
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Does pka changes with temperature?
pKa (dissociation constant) is variable with temperature.
The Ka of an unknown weak acid is 5.4 x 10 to the power of negative 10. Determine the pKa of the weak acid?
pKa = -log KapKa = -log 5.4x10^-10pKa = 9.27
What is the Ka for aspirin with a pka of 3.48?
All you need to do to get Ka is to take the antilog of the pKa.
How can you calculate pka valve if pH is given?
How can you calculate pka valve if ph is given?
How you can select buffer in hplc according to pka value?
By following + or - 2 pH to the pKa value
What is pKa valu of MeOH?
pKa of methanol is 15.5 see this pdf for more information about pka-values: http://chemweb.unp.ac.za/chemistry/Physical_Data/pKa_compilation.pdf
What is the pka of diisopropylamine?
pKa=40
How do you calculate pka?
how do you calculate pKa
What is the pka of bromoacetic acid?
pKa=2.86
What is PKa value of benzyl alcohol?
pKa = 15
PKa value of diethylmalonate?
It is around pKa=13
What is the pka value of Doxofylline?
Doxofylline Pka value is about 9.8.
Does pka changes with temperature?
pKa (dissociation constant) is variable with temperature.
What is the pka value of ether?
The pka of a protonated ether (the conjugate acid) is about -3.5
What is the pKa value for sodium octanesulfonate?
The pKa of sulfonic acid is < 0
How do you find the pka value of a drug?
pKa of drug can be determined from Handerson Hasselbatch equation., when conc. of salt become equal to acid i.e. at equivalence point when pH=pka then in H-H equn, pH=pka
The Ka of an unknown weak acid is 5.4 x 10 to the power of negative 10. Determine the pKa of the weak acid?
pKa = -log KapKa = -log 5.4x10^-10pKa = 9.27
