Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • abbreviation chemistry the negative logarithm (to the base 10) of the dissociation constant of an electrolyte.
  • abbreviation chemistry the pH at which equal concentrations of the acidic and basic forms of a substance are present.
  • abbreviation metrology Symbol for the picokelvin, an SI unit of thermodynamic temperature equal to 10−12 kelvins.

Etymologies

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Examples

  • Since the pK is a constant the only way the ocean, for example, can absorb more CO

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  • Since the pK is a constant the only way the ocean, for example, can absorb more CO

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  • Since the pK is a constant the only way the ocean, for example, can absorb more CO

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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.

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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".

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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.

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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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