Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- abbreviation chemistry the
negative logarithm (to thebase 10) of the dissociation constant of anelectrolyte . - abbreviation chemistry the
pH at whichequal concentrations of theacidic andbasic forms of asubstance are present. - abbreviation metrology Symbol for the
picokelvin , anSI unit ofthermodynamic temperature equal to 10−12kelvins .
Etymologies
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Examples
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Since the pK is a constant the only way the ocean, for example, can absorb more CO
PCLinuxOS-Forums 2008
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Since the pK is a constant the only way the ocean, for example, can absorb more CO
PCLinuxOS-Forums 2008
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Since the pK is a constant the only way the ocean, for example, can absorb more CO
PCLinuxOS-Forums 2008
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In this T-shaped conformation, Phe192 is likely to increase the acidity of the phenol group of the catalytic Tyr155 from a pK, which presumably might facilitate the hydride transfer to the estrone.
PLoS ONE Alerts: New Articles Matthias Negri et al. 2010
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When this occurs, the pH = pK a A buffer is effective at a pH within approximately ± 1 of the pKa • Buffer capacity: The more highly concentrated the buffer solution, the more acid or base it can "consume".
Recently Uploaded Slideshows atalossofnamesk 2010
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Carbonic acid's acidity is 6.36 pK, it's boiling point is at -78 C, and it's melting point is 210 C.
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Consequently, biochemists are interested in the pK values of the ionizable groups in proteins and how these pK values depend on their environment.
Journal of Biological Chemistry current issue C. N. Pace 2009
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Consequently, biochemists are interested in the pK values of the ionizable groups in proteins and how these pK values depend on their environment.
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Assuming a pK a of 10, as is usual for a Tyr residue, then deprotonation of Tyr419 will further increase the barrier to
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Assuming a pK a of 10, as is usual for a Tyr residue, then deprotonation of Tyr419 will further increase the barrier to
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