Compilation - Carbon dioxide with Sea Water (IUPAC SDS Volume 62)
SDS Volume (2810)
Volume 62. Carbon Dioxide in Water and Aqueous Electrolyte Solutions, p None
Original Measurements
Li, Y. -H.; Tsui, T. -F.; J. Geophys. Res. 1971, 76, 4203-7.
Variables:
Room Temp:
273.85 - 303.15
$\pu{K}$
Pressure:
101.325
$\pu{kPa}$
Mass concentration (m/v) (2):
Chlorinity = 0.0 - 29.0 %
g/1000 g
Prepared by:
Method/Apparatus/Procedure:
Water-saturated $\ce{CO2}$ gas was bubbled overnight through sea water in an equilibration chamber in a constant temperature bath. A sample was removed with an airtight glass syringe and injected into a $\ce{CO2}$-extraction system. Infra-red analysis was done on liberated $\ce{CO2}$. Sea water samples were acidified with 8 M $\ce{HCl}$ to a pH below 3.
Source and Purity of Materials:
- Carbon dioxide. Source not given. Purity of $\pu{99.99 \pm 0.01\%}$.
- Sea water. Source not given.
Estimated Errors:
Ambient temperature: δT/K = ±0.02
Pressure: δP1/mmHg = ±0.005
Components:
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Seawater, $\ce{ H2O }$; [7732-18-5(C)] NIST WebBook
Experimental Data
| $T$ ($\pu{K}$) | $T$ (°C) | $S$ (g/L) | Chlorinity (g/1000 g) |
|---|---|---|---|
| 273.85 | 0.7 | 0.07501 | 0 |
| 277.15 | 4.0 | 0.06603 | 0 |
| 283.35 | 10.2 | 0.05302 | 0 |
| 293.15 | 20.0 | 0.03911 | 0 |
| 303.15 | 30.0 | 0.02997 | 0 |
| 283.35 | 10.2 | 0.04863 | 10.0 |
| 277.15 | 4.0 | 0.05526 | 20.0 |
| 283.35 | 10.2 | 0.04482 | 20.0 |
| 293.15 | 20.0 | 0.03359 | 20.0 |
| 303.15 | 30.0 | 0.02614 | 20.0 |
| 277.15 | 4.0 | 0.05086 | 29.0 |
| 283.15 | 10.2 | 0.04162 | 29.0 |
| 293.15 | 20.0 | 0.03138 | 29.0 |
| 303.15 | 30.0 | 0.02463 | 29.0 |
| 277.15 | 4.0 | 0.05547 | 0.6413 m NaCl |
| 293.15 | 20.0 | 0.03358 | 0.6413 m NaCl |
| 303.15 | 30.0 | 0.02618 | 0.6413 m NaCl |
(a) Calculated by the compiler.
(b) S1 = solubility of CO2
