Abstract
The densities and the sound speeds of aqueous NaHCO3 and Na2CO3 solutions were measured from 0.05 to 1.0m and from 0 to 45°C. These data were fitted to functions of molality and temperature and were used to calculate the apparent molal volumes Vφ{symbol} and compressibilites κφ of these solutions. Polynomial expression for Vφ{symbol} and κφ as functions of molality and temperature have been determined. The partial molal volumes and compressibilities of these solutions and literature data have been used to determine the volume ΔV and compressibility Δκ changes for the ionization of carbonic acid in aqueous solutions. These values of ΔV and Δκ have been used to estimate the effect of pressure on the ionization constants for carbonic acid from 0 to 45°C. The calculated pressure coefficients are in good agreement with the measured values.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 233-254 |
| Number of pages | 22 |
| Journal | Journal of Solution Chemistry |
| Volume | 12 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1983 |
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Keywords
- carbonic acid
- compressibility
- density
- ionization
- NaCO
- NaHCO
- partial molal volume
- pressure effects
- sound speed
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
Densities and compressibilities of aqueous sodium carbonate and bicarbonate from 0 to 45°C. / Hershey, J. Peter; Sotolongo, Sara; Millero, Frank J.
In: Journal of Solution Chemistry, Vol. 12, No. 4, 04.1983, p. 233-254.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Densities and compressibilities of aqueous sodium carbonate and bicarbonate from 0 to 45°C
AU - Hershey, J. Peter
AU - Sotolongo, Sara
AU - Millero, Frank J
PY - 1983/4
Y1 - 1983/4
N2 - The densities and the sound speeds of aqueous NaHCO3 and Na2CO3 solutions were measured from 0.05 to 1.0m and from 0 to 45°C. These data were fitted to functions of molality and temperature and were used to calculate the apparent molal volumes Vφ{symbol} and compressibilites κφ of these solutions. Polynomial expression for Vφ{symbol} and κφ as functions of molality and temperature have been determined. The partial molal volumes and compressibilities of these solutions and literature data have been used to determine the volume ΔV and compressibility Δκ changes for the ionization of carbonic acid in aqueous solutions. These values of ΔV and Δκ have been used to estimate the effect of pressure on the ionization constants for carbonic acid from 0 to 45°C. The calculated pressure coefficients are in good agreement with the measured values.
AB - The densities and the sound speeds of aqueous NaHCO3 and Na2CO3 solutions were measured from 0.05 to 1.0m and from 0 to 45°C. These data were fitted to functions of molality and temperature and were used to calculate the apparent molal volumes Vφ{symbol} and compressibilites κφ of these solutions. Polynomial expression for Vφ{symbol} and κφ as functions of molality and temperature have been determined. The partial molal volumes and compressibilities of these solutions and literature data have been used to determine the volume ΔV and compressibility Δκ changes for the ionization of carbonic acid in aqueous solutions. These values of ΔV and Δκ have been used to estimate the effect of pressure on the ionization constants for carbonic acid from 0 to 45°C. The calculated pressure coefficients are in good agreement with the measured values.
KW - carbonic acid
KW - compressibility
KW - density
KW - ionization
KW - NaCO
KW - NaHCO
KW - partial molal volume
KW - pressure effects
KW - sound speed
UR - http://www.scopus.com/inward/record.url?scp=33947588008&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947588008&partnerID=8YFLogxK
U2 - 10.1007/BF00646199
DO - 10.1007/BF00646199
M3 - Article
AN - SCOPUS:33947588008
VL - 12
SP - 233
EP - 254
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
SN - 0095-9782
IS - 4
ER -