Abstract
The apparent molal volumes and adiabatic compressibilities of 15 amino acids in water have been determined at 25°C from precise density and sound measurements. The electrostriction partial molal volume and compressibility of the amino acids were determined from V̄0(meas) - V̄0(int) and K̄0(meas) - K̄0(int). The values of V̄0(int) have been estimated from V̄0 of the uncharged amide isomers and V̄0cryst, the crystal molal volume. Both V̄0(elect) and K̄0(elect) yield values of 4.1 ± 0.4 for the number of water molecules hydrated to the amino acids. Group contributions for the partial molal volume and adiabatic compressibilities have been determined from the amino acids. The volume results are in good agreement with the values calculated by other workers on soluble organic solutes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 784-792 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry |
| Volume | 82 |
| Issue number | 7 |
| State | Published - 1978 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
The apparent molal volumes and adiabatic compressibilities of aqueous amino acids at 25°C. / Millero, Frank J; Surdo, Antonio L.; Shin, Charles.
In: Journal of Physical Chemistry, Vol. 82, No. 7, 1978, p. 784-792.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The apparent molal volumes and adiabatic compressibilities of aqueous amino acids at 25°C
AU - Millero, Frank J
AU - Surdo, Antonio L.
AU - Shin, Charles
PY - 1978
Y1 - 1978
N2 - The apparent molal volumes and adiabatic compressibilities of 15 amino acids in water have been determined at 25°C from precise density and sound measurements. The electrostriction partial molal volume and compressibility of the amino acids were determined from V̄0(meas) - V̄0(int) and K̄0(meas) - K̄0(int). The values of V̄0(int) have been estimated from V̄0 of the uncharged amide isomers and V̄0cryst, the crystal molal volume. Both V̄0(elect) and K̄0(elect) yield values of 4.1 ± 0.4 for the number of water molecules hydrated to the amino acids. Group contributions for the partial molal volume and adiabatic compressibilities have been determined from the amino acids. The volume results are in good agreement with the values calculated by other workers on soluble organic solutes.
AB - The apparent molal volumes and adiabatic compressibilities of 15 amino acids in water have been determined at 25°C from precise density and sound measurements. The electrostriction partial molal volume and compressibility of the amino acids were determined from V̄0(meas) - V̄0(int) and K̄0(meas) - K̄0(int). The values of V̄0(int) have been estimated from V̄0 of the uncharged amide isomers and V̄0cryst, the crystal molal volume. Both V̄0(elect) and K̄0(elect) yield values of 4.1 ± 0.4 for the number of water molecules hydrated to the amino acids. Group contributions for the partial molal volume and adiabatic compressibilities have been determined from the amino acids. The volume results are in good agreement with the values calculated by other workers on soluble organic solutes.
UR - http://www.scopus.com/inward/record.url?scp=33947091942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947091942&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33947091942
VL - 82
SP - 784
EP - 792
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
SN - 0022-3654
IS - 7
ER -