Abstract
The densities and sound speeds of aqueous HCl and NaOH solutions were measured from 0.1 to 1.0m and from 0 to 45°C. These data were combined with literature data and fitted to functions of molality and temperature. The apparent molal volumes Vφ{symbol} and compressibilities ΔK of these solutions were fitted to functions of molality and temperature. The partial molal volumes and compressibilities of HCl and NaOH solutions were used to calculate the partial molal volume ‡V and compressibility Δκ changes for the ionization of water. Combined with literature data these values of ΔV adn Δκ were used to calculated the effect of pressure on the ionization constant of water Kw from 0 to 200°C. The effect of pressure on Kw calculated from partial molal quantities are in reasonable agreement with that determined directly from high pressure measurements taken from the literature up to 1000 bar. It is necessary to use the pressure dependence of ΔK0 to extend the calculated pressure dependence of Kw up to 6000 bar.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 825-848 |
| Number of pages | 24 |
| Journal | Journal of Solution Chemistry |
| Volume | 13 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1984 |
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Keywords
- compressibility
- Density
- HCl
- ionization of water
- NaOH
- partial molal volume and compressibility
- pressure effects
- sound speed
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
Densities and compressibilities of aqueous HCl and NaOH from 0 to 45°C. The effect of pressure on the ionization of water. / Hershey, J. P.; Damesceno, R.; Millero, Frank J.
In: Journal of Solution Chemistry, Vol. 13, No. 12, 12.1984, p. 825-848.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Densities and compressibilities of aqueous HCl and NaOH from 0 to 45°C. The effect of pressure on the ionization of water
AU - Hershey, J. P.
AU - Damesceno, R.
AU - Millero, Frank J
PY - 1984/12
Y1 - 1984/12
N2 - The densities and sound speeds of aqueous HCl and NaOH solutions were measured from 0.1 to 1.0m and from 0 to 45°C. These data were combined with literature data and fitted to functions of molality and temperature. The apparent molal volumes Vφ{symbol} and compressibilities ΔK of these solutions were fitted to functions of molality and temperature. The partial molal volumes and compressibilities of HCl and NaOH solutions were used to calculate the partial molal volume ‡V and compressibility Δκ changes for the ionization of water. Combined with literature data these values of ΔV adn Δκ were used to calculated the effect of pressure on the ionization constant of water Kw from 0 to 200°C. The effect of pressure on Kw calculated from partial molal quantities are in reasonable agreement with that determined directly from high pressure measurements taken from the literature up to 1000 bar. It is necessary to use the pressure dependence of ΔK0 to extend the calculated pressure dependence of Kw up to 6000 bar.
AB - The densities and sound speeds of aqueous HCl and NaOH solutions were measured from 0.1 to 1.0m and from 0 to 45°C. These data were combined with literature data and fitted to functions of molality and temperature. The apparent molal volumes Vφ{symbol} and compressibilities ΔK of these solutions were fitted to functions of molality and temperature. The partial molal volumes and compressibilities of HCl and NaOH solutions were used to calculate the partial molal volume ‡V and compressibility Δκ changes for the ionization of water. Combined with literature data these values of ΔV adn Δκ were used to calculated the effect of pressure on the ionization constant of water Kw from 0 to 200°C. The effect of pressure on Kw calculated from partial molal quantities are in reasonable agreement with that determined directly from high pressure measurements taken from the literature up to 1000 bar. It is necessary to use the pressure dependence of ΔK0 to extend the calculated pressure dependence of Kw up to 6000 bar.
KW - compressibility
KW - Density
KW - HCl
KW - ionization of water
KW - NaOH
KW - partial molal volume and compressibility
KW - pressure effects
KW - sound speed
UR - http://www.scopus.com/inward/record.url?scp=0000315392&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000315392&partnerID=8YFLogxK
U2 - 10.1007/BF00645331
DO - 10.1007/BF00645331
M3 - Article
VL - 13
SP - 825
EP - 848
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
SN - 0095-9782
IS - 12
ER -