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Why pka for ethylacetate is 23 whereas that for ethyl acetoacetate is 11?
Wiki User
∙ 12y ago
The most acidic proton in ethylacetoacetate is the methylene between the two carbonyl groups. The anion resulting from deprotonation of this methylene can be resonance stabilised onto both carbonyls, making it more stable and therefore easier to form. The net effect is the proton is more acidic compared to ethylacetate where only one resonance structure can be drawn.
Wiki User
∙ 12y ago
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What is definition of pka value and difference between pH and pKa?
A pKa value is a measurement used for bases and acids. The measurement pH applies to hydronium ion concentrations that are in a solution, whereas pKa only applies to determining the amount of dissociation an acid wants to do in a solution.
What is pKa value of aminoacids?
The pKa values of Amino acids depends on its side chain. However, the protonated amine group (NH3+) tends to have a pKa greater than 8.8, whereas the carboxylic acid (COOH) tends to have a pKa of 1.8 - 2.8. If you keep your amino acid at a pH between this value, you will likely have a Zwitter ion.
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 definition of pka value and difference between pH and pKa?
A pKa value is a measurement used for bases and acids. The measurement pH applies to hydronium ion concentrations that are in a solution, whereas pKa only applies to determining the amount of dissociation an acid wants to do in a solution.
What is pKa value of aminoacids?
The pKa values of Amino acids depends on its side chain. However, the protonated amine group (NH3+) tends to have a pKa greater than 8.8, whereas the carboxylic acid (COOH) tends to have a pKa of 1.8 - 2.8. If you keep your amino acid at a pH between this value, you will likely have a Zwitter ion.
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
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
